231911460 has 72 divisors (see below), whose sum is σ = 767422656. Its totient is φ = 56220480.

The previous prime is 231911441. The next prime is 231911503. The reversal of 231911460 is 64119132.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56584 + ... + 60543.

It is an arithmetic number, because the mean of its divisors is an integer number (10658648).

Almost surely, 2^231911460 is an apocalyptic number.

231911460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231911460 is an abundant number, since it is smaller than the sum of its proper divisors (535511196).

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

231911460 is a wasteful number, since it uses less digits than its factorization.

231911460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117153 (or 117148 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 231911460 is about 15228.6394664789. The cubic root of 231911460 is about 614.3851876820.

The spelling of 231911460 in words is "two hundred thirty-one million, nine hundred eleven thousand, four hundred sixty".