231807012605656 has 64 divisors (see below), whose sum is σ = 449962460100000. Its totient is φ = 111823028868096.

The previous prime is 231807012605617. The next prime is 231807012605657. The reversal of 231807012605656 is 656506210708132.

231807012605656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231807012605657) 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, 3255269380 + ... + 3255340588.

Almost surely, 2^{231807012605656} is an apocalyptic number.

It is an amenable number.

231807012605656 is a deficient number, since it is larger than the sum of its proper divisors (218155447494344).

231807012605656 is a wasteful number, since it uses less digits than its factorization.

231807012605656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81556 (or 81552 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 231807012605656 in words is "two hundred thirty-one trillion, eight hundred seven billion, twelve million, six hundred five thousand, six hundred fifty-six".