231956928 has 84 divisors (see below), whose sum is σ = 759856240. Its totient is φ = 66272256.

The previous prime is 231956887. The next prime is 231956939. The reversal of 231956928 is 829659132.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24733 + ... + 32796.

Almost surely, 2^231956928 is an apocalyptic number.

231956928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231956928 is an abundant number, since it is smaller than the sum of its proper divisors (527899312).

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

231956928 is a wasteful number, since it uses less digits than its factorization.

231956928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57554 (or 57541 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 231956928 is about 15230.1322384279. The cubic root of 231956928 is about 614.4253366830.

The spelling of 231956928 in words is "two hundred thirty-one million, nine hundred fifty-six thousand, nine hundred twenty-eight".