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131031101312112 = 2437054938693881
BaseRepresentation
bin11101110010110000001110…
…001111111000110001110000
3122011221110011202001001211110
4131302300032033320301300
5114133303143413441422
61142402505033313320
736412453561226031
oct3562601617706160
9564843152031743
10131031101312112
1138828a83798251
1212842856865840
135816245135a91
14244dd21010a88
15102364647d60c
hex772c0e3f8c70

131031101312112 has 40 divisors (see below), whose sum is σ = 338501818512400. Its totient is φ = 43676413539840.

The previous prime is 131031101312093. The next prime is 131031101312129. The reversal of 131031101312112 is 211213101130131.

It is a super-2 number, since 2×1310311013121122 (a number of 29 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 7 ways as a sum of consecutive naturals, for example, 15960589 + ... + 22733292.

It is an arithmetic number, because the mean of its divisors is an integer number (8462545462810).

Almost surely, 2131031101312112 is an apocalyptic number.

131031101312112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131031101312112 is an abundant number, since it is smaller than the sum of its proper divisors (207470717200288).

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

131031101312112 is a wasteful number, since it uses less digits than its factorization.

131031101312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38764441 (or 38764435 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 131031101312112 its reverse (211213101130131), we get a palindrome (342244202442243).

The spelling of 131031101312112 in words is "one hundred thirty-one trillion, thirty-one billion, one hundred one million, three hundred twelve thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 48 70549 141098 211647 282196 423294 564392 846588 1128784 1693176 3386352 38693881 77387762 116081643 154775524 232163286 309551048 464326572 619102096 928653144 1857306288 2729814610669 5459629221338 8189443832007 10919258442676 16378887664014 21838516885352 32757775328028 43677033770704 65515550656056 131031101312112