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13131112311320 = 2351973236681909
BaseRepresentation
bin1011111100010101001101…
…0010001110101000011000
31201111022200210110001011212
42333011103102032220120
53210120004222430240
643532203312242252
72523456130016033
oct277052322165030
951438623401155
1013131112311320
114202967632883
121580a92b40388
13743349131513
1433579911601a
1517b884eb4165
hexbf15348ea18

13131112311320 has 64 divisors (see below), whose sum is σ = 31526030412000. Its totient is φ = 4907836044288.

The previous prime is 13131112311319. The next prime is 13131112311371. The reversal of 13131112311320 is 2311321113131.

It is a super-2 number, since 2×131311123113202 (a number of 27 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 15 ways as a sum of consecutive naturals, for example, 118285475 + ... + 118396434.

Almost surely, 213131112311320 is an apocalyptic number.

13131112311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131112311320 is an abundant number, since it is smaller than the sum of its proper divisors (18394918100680).

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

13131112311320 is a wasteful number, since it uses less digits than its factorization.

13131112311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236682012 (or 236682008 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 13131112311320 its reverse (2311321113131), we get a palindrome (15442433424451).

The spelling of 13131112311320 in words is "thirteen trillion, one hundred thirty-one billion, one hundred twelve million, three hundred eleven thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 19 20 38 40 73 76 95 146 152 190 292 365 380 584 730 760 1387 1460 2774 2920 5548 6935 11096 13870 27740 55480 236681909 473363818 946727636 1183409545 1893455272 2366819090 4496956271 4733638180 8993912542 9467276360 17277779357 17987825084 22484781355 34555558714 35975650168 44969562710 69111117428 86388896785 89939125420 138222234856 172777793570 179878250840 328277807783 345555587140 656555615566 691111174280 1313111231132 1641389038915 2626222462264 3282778077830 6565556155660 13131112311320