231597973288 has 32 divisors (see below), whose sum is σ = 473747823360. Its totient is φ = 105266318080.

The previous prime is 231597973279. The next prime is 231597973301. The reversal of 231597973288 is 882379795132.

It is a happy number.

231597973288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231597973288² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1971945 + ... + 2086087.

It is an arithmetic number, because the mean of its divisors is an integer number (14804619480).

Almost surely, 2^231597973288 is an apocalyptic number.

It is an amenable number.

231597973288 is an abundant number, since it is smaller than the sum of its proper divisors (242149850072).

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

231597973288 is a wasteful number, since it uses less digits than its factorization.

231597973288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137217 (or 137213 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 64.

The spelling of 231597973288 in words is "two hundred thirty-one billion, five hundred ninety-seven million, nine hundred seventy-three thousand, two hundred eighty-eight".