231912152129 has 16 divisors (see below), whose sum is σ = 266151782400. Its totient is φ = 197950579920.

The previous prime is 231912152089. The next prime is 231912152141. The reversal of 231912152129 is 921251219132.

It is a cyclic number.

It is not a de Polignac number, because 231912152129 - 2²⁴ = 231895374913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231912152092 and 231912152101.

It is not an unprimeable number, because it can be changed into a prime (231912152149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3952682 + ... + 4010924.

It is an arithmetic number, because the mean of its divisors is an integer number (16634486400).

Almost surely, 2^231912152129 is an apocalyptic number.

It is an amenable number.

231912152129 is a deficient number, since it is larger than the sum of its proper divisors (34239630271).

231912152129 is a wasteful number, since it uses less digits than its factorization.

231912152129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60620.

The product of its digits is 19440, while the sum is 38.

The spelling of 231912152129 in words is "two hundred thirty-one billion, nine hundred twelve million, one hundred fifty-two thousand, one hundred twenty-nine".