31457064 has 32 divisors (see below), whose sum is σ = 81181440. Its totient is φ = 10147200.

The previous prime is 31457051. The next prime is 31457071. The reversal of 31457064 is 46075413.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20397 + ... + 21884.

It is an arithmetic number, because the mean of its divisors is an integer number (2536920).

Almost surely, 2^31457064 is an apocalyptic number.

It is an amenable number.

31457064 is an abundant number, since it is smaller than the sum of its proper divisors (49724376).

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

31457064 is a wasteful number, since it uses less digits than its factorization.

31457064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42321 (or 42317 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 31457064 is about 5608.6597329487. The cubic root of 31457064 is about 315.6744229896.

The spelling of 31457064 in words is "thirty-one million, four hundred fifty-seven thousand, sixty-four".