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12311301210 = 2351361517499
BaseRepresentation
bin10110111011100111…
…11000110001011010
31011202222212220022220
423131303320301122
5200203143114320
65353345524510
7614041222305
oct133563706132
934688786286
1012311301210
1152484548aa
122477043736
1312127bb520
1484b0d3b3c
154c0c62e40
hex2ddcf8c5a

12311301210 has 64 divisors (see below), whose sum is σ = 32341680000. Its totient is φ = 2980788480.

The previous prime is 12311301193. The next prime is 12311301221. The reversal of 12311301210 is 1210311321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12311301210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234960 + ... + 282539.

It is an arithmetic number, because the mean of its divisors is an integer number (505338750).

Almost surely, 212311301210 is an apocalyptic number.

12311301210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12311301210 is an abundant number, since it is smaller than the sum of its proper divisors (20030378790).

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

12311301210 is a wasteful number, since it uses less digits than its factorization.

12311301210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517583.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12311301210 its reverse (1210311321), we get a palindrome (13521612531).

The spelling of 12311301210 in words is "twelve billion, three hundred eleven million, three hundred one thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 61 65 78 122 130 183 195 305 366 390 610 793 915 1586 1830 2379 3965 4758 7930 11895 23790 517499 1034998 1552497 2587495 3104994 5174990 6727487 7762485 13454974 15524970 20182461 31567439 33637435 40364922 63134878 67274870 94702317 100912305 157837195 189404634 201824610 315674390 410376707 473511585 820753414 947023170 1231130121 2051883535 2462260242 4103767070 6155650605 12311301210