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231012100102131 = 32316411291732229
BaseRepresentation
bin110100100001101010110010…
…001010100101011111110011
31010021221112121110020010012100
4310201222302022211133303
5220234400240111232011
62135153254350231443
766442034123645535
oct6441526212453763
91107845543203170
10231012100102131
11676757550420a7
1221aab838ab5583
139bb94697a95ba
14410908c451855
151ba924ca24d56
hexd21ab22a57f3

231012100102131 has 24 divisors (see below), whose sum is σ = 344985510130560. Its totient is φ = 148807552665600.

The previous prime is 231012100102111. The next prime is 231012100102139. The reversal of 231012100102131 is 131201001210132.

231012100102131 is a `hidden beast` number, since 2 + 310 + 1 + 210 + 0 + 10 + 2 + 131 = 666.

It is not a de Polignac number, because 231012100102131 - 26 = 231012100102067 is a prime.

It is a super-2 number, since 2×2310121001021312 (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231012100102139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645687276 + ... + 646044953.

It is an arithmetic number, because the mean of its divisors is an integer number (14374396255440).

Almost surely, 2231012100102131 is an apocalyptic number.

231012100102131 is a deficient number, since it is larger than the sum of its proper divisors (113973410028429).

231012100102131 is a wasteful number, since it uses less digits than its factorization.

231012100102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291732907 (or 1291732904 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 231012100102131 its reverse (131201001210132), we get a palindrome (362213101312263).

The spelling of 231012100102131 in words is "two hundred thirty-one trillion, twelve billion, one hundred million, one hundred two thousand, one hundred thirty-one".

Divisors: 1 3 9 31 93 279 641 1923 5769 19871 59613 178839 1291732229 3875196687 11625590061 40043699099 120131097297 360393291891 828000358789 2484001076367 7452003229101 25668011122459 77004033367377 231012100102131