231377564 has 24 divisors (see below), whose sum is σ = 442108800. Its totient is φ = 105079280.

The previous prime is 231377563. The next prime is 231377579. The reversal of 231377564 is 465773132.

231377564 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 (231377563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88427 + ... + 91005.

It is an arithmetic number, because the mean of its divisors is an integer number (18421200).

Almost surely, 2^231377564 is an apocalyptic number.

It is an amenable number.

231377564 is a deficient number, since it is larger than the sum of its proper divisors (210731236).

231377564 is a wasteful number, since it uses less digits than its factorization.

231377564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633 (or 4631 counting only the distinct ones).

The product of its digits is 105840, while the sum is 38.

The square root of 231377564 is about 15211.1000259679. The cubic root of 231377564 is about 613.9133555549.

The spelling of 231377564 in words is "two hundred thirty-one million, three hundred seventy-seven thousand, five hundred sixty-four".