312431308 has 12 divisors (see below), whose sum is σ = 624862672. Its totient is φ = 133899120.

The previous prime is 312431291. The next prime is 312431359. The reversal of 312431308 is 803134213.

312431308 is an admirable number.

It is a super-2 number, since 2×312431308² = 195226644437181728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5579103 + ... + 5579158.

Almost surely, 2^312431308 is an apocalyptic number.

It is an amenable number.

312431308 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

312431308 is a wasteful number, since it uses less digits than its factorization.

312431308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11158272 (or 11158270 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 312431308 is about 17675.7265197219. The cubic root of 312431308 is about 678.5546781651.

The spelling of 312431308 in words is "three hundred twelve million, four hundred thirty-one thousand, three hundred eight".