231215264 has 24 divisors (see below), whose sum is σ = 520234848. Its totient is φ = 99092160.

The previous prime is 231215261. The next prime is 231215287. The reversal of 231215264 is 462512132.

It is a happy number.

231215264 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231215261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515882 + ... + 516329.

It is an arithmetic number, because the mean of its divisors is an integer number (21676452).

Almost surely, 2^231215264 is an apocalyptic number.

It is an amenable number.

231215264 is an abundant number, since it is smaller than the sum of its proper divisors (289019584).

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

231215264 is a wasteful number, since it uses less digits than its factorization.

231215264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032228 (or 1032220 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 231215264 is about 15205.7641702086. The cubic root of 231215264 is about 613.7697786208.

Adding to 231215264 its reverse (462512132), we get a palindrome (693727396).

It can be divided in two parts, 2312 and 15264, that added together give a cube (17576 = 26³).

The spelling of 231215264 in words is "two hundred thirty-one million, two hundred fifteen thousand, two hundred sixty-four".