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312131403102300 = 2235221149110042741
BaseRepresentation
bin100011011111000011100000…
…1011001111011100001011100
31111221011110201011010220210020
41012332013001121323201130
5311402430103143233200
63023503104222512140
7122513515100443155
oct10676070131734134
91457143634126706
10312131403102300
1190500203890a31
122b0111a7435650
1310521b32592a72
145711351d9c92c
1526143c289bea0
hex11be1c167b85c

312131403102300 has 144 divisors (see below), whose sum is σ = 909228404241024. Its totient is φ = 82671835680000.

The previous prime is 312131403102271. The next prime is 312131403102317. The reversal of 312131403102300 is 3201304131213.

It is a super-2 number, since 2×3121314031023002 (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26058930 + ... + 36101670.

Almost surely, 2312131403102300 is an apocalyptic number.

312131403102300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312131403102300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454614202120512).

312131403102300 is an abundant number, since it is smaller than the sum of its proper divisors (597097001138724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312131403102300 is a wasteful number, since it uses less digits than its factorization.

312131403102300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10043460 (or 10043453 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 312131403102300 its reverse (3201304131213), we get a palindrome (315332707233513).

The spelling of 312131403102300 in words is "three hundred twelve trillion, one hundred thirty-one billion, four hundred three million, one hundred two thousand, three hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 211 300 422 491 633 844 982 1055 1266 1473 1964 2110 2455 2532 2946 3165 4220 4910 5275 5892 6330 7365 9820 10550 12275 12660 14730 15825 21100 24550 29460 31650 36825 49100 63300 73650 103601 147300 207202 310803 414404 518005 621606 1036010 1243212 1554015 2072020 2590025 3108030 5180050 6216060 7770075 10042741 10360100 15540150 20085482 30128223 31080300 40170964 50213705 60256446 100427410 120512892 150641115 200854820 251068525 301282230 502137050 602564460 753205575 1004274100 1506411150 2119018351 3012822300 4238036702 4930985831 6357055053 8476073404 9861971662 10595091755 12714110106 14792957493 19723943324 21190183510 24654929155 25428220212 29585914986 31785275265 42380367020 49309858310 52975458775 59171829972 63570550530 73964787465 98619716620 105950917550 123274645775 127141101060 147929574930 158926376325 211901835100 246549291550 295859149860 317852752650 369823937325 493098583100 635705505300 739647874650 1040438010341 1479295749300 2080876020682 3121314031023 4161752041364 5202190051705 6242628062046 10404380103410 12485256124092 15606570155115 20808760206820 26010950258525 31213140310230 52021900517050 62426280620460 78032850775575 104043801034100 156065701551150 312131403102300