231564264 has 32 divisors (see below), whose sum is σ = 584327520. Its totient is φ = 76465856.

The previous prime is 231564251. The next prime is 231564313. The reversal of 231564264 is 462465132.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42519 + ... + 47654.

It is an arithmetic number, because the mean of its divisors is an integer number (18260235).

Almost surely, 2^231564264 is an apocalyptic number.

231564264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231564264 is an abundant number, since it is smaller than the sum of its proper divisors (352763256).

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

231564264 is a wasteful number, since it uses less digits than its factorization.

231564264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90289 (or 90285 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 231564264 is about 15217.2357542360. The cubic root of 231564264 is about 614.0784346673.

The spelling of 231564264 in words is "two hundred thirty-one million, five hundred sixty-four thousand, two hundred sixty-four".