231395460 has 24 divisors (see below), whose sum is σ = 647907456. Its totient is φ = 61705440.

The previous prime is 231395459. The next prime is 231395467. The reversal of 231395460 is 64593132.

It is a super-2 number, since 2×231395460² = 107087717817223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231395467) 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, 1928236 + ... + 1928355.

It is an arithmetic number, because the mean of its divisors is an integer number (26996144).

Almost surely, 2^231395460 is an apocalyptic number.

231395460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231395460 is an abundant number, since it is smaller than the sum of its proper divisors (416511996).

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

231395460 is a wasteful number, since it uses less digits than its factorization.

231395460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856603 (or 3856601 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 231395460 is about 15211.6882692225. The cubic root of 231395460 is about 613.9291829468.

The spelling of 231395460 in words is "two hundred thirty-one million, three hundred ninety-five thousand, four hundred sixty".