31082012 has 24 divisors (see below), whose sum is σ = 59018736. Its totient is φ = 14237568.

The previous prime is 31081987. The next prime is 31082017. The reversal of 31082012 is 21028013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31082017) 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, 4943 + ... + 9305.

It is an arithmetic number, because the mean of its divisors is an integer number (2459114).

Almost surely, 2^31082012 is an apocalyptic number.

It is an amenable number.

31082012 is a deficient number, since it is larger than the sum of its proper divisors (27936724).

31082012 is a wasteful number, since it uses less digits than its factorization.

31082012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517 (or 4515 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 31082012 is about 5575.1243932311. The cubic root of 31082012 is about 314.4148437894.

The spelling of 31082012 in words is "thirty-one million, eighty-two thousand, twelve".