231204864 has 144 divisors (see below), whose sum is σ = 679704480. Its totient is φ = 69836800.

The previous prime is 231204847. The next prime is 231204877. The reversal of 231204864 is 468402132.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 743269 + ... + 743579.

It is an arithmetic number, because the mean of its divisors is an integer number (4720170).

Almost surely, 2^231204864 is an apocalyptic number.

231204864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231204864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339852240).

231204864 is an abundant number, since it is smaller than the sum of its proper divisors (448499616).

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

231204864 is a wasteful number, since it uses less digits than its factorization.

231204864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 231204864 is about 15205.4221907844. The cubic root of 231204864 is about 613.7605760833.

Adding to 231204864 its reverse (468402132), we get a palindrome (699606996).

The spelling of 231204864 in words is "two hundred thirty-one million, two hundred four thousand, eight hundred sixty-four".