231879400 has 24 divisors (see below), whose sum is σ = 539120070. Its totient is φ = 92751680.

The previous prime is 231879391. The next prime is 231879421. The reversal of 231879400 is 4978132.

231879400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 134699236 + 97180164 = 11606^2 + 9858^2 .

It is a super-2 number, since 2×231879400² = 107536112288720000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 579499 + ... + 579898.

Almost surely, 2^231879400 is an apocalyptic number.

231879400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231879400 is an abundant number, since it is smaller than the sum of its proper divisors (307240670).

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

231879400 is a wasteful number, since it uses less digits than its factorization.

231879400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159413 (or 1159404 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 231879400 is about 15227.5868081584. The cubic root of 231879400 is about 614.3568750136.

It can be divided in two parts, 2318 and 79400, that added together give a palindrome (81718).

The spelling of 231879400 in words is "two hundred thirty-one million, eight hundred seventy-nine thousand, four hundred".