31056012 has 36 divisors (see below), whose sum is σ = 84542640. Its totient is φ = 9555552.

The previous prime is 31055989. The next prime is 31056029. The reversal of 31056012 is 21065013.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32712 + ... + 33647.

Almost surely, 2^31056012 is an apocalyptic number.

It is an amenable number.

31056012 is an abundant number, since it is smaller than the sum of its proper divisors (53486628).

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

31056012 is a wasteful number, since it uses less digits than its factorization.

31056012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66382 (or 66377 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 31056012 is about 5572.7921188575. The cubic root of 31056012 is about 314.3271503415.

Subtracting from 31056012 its reverse (21065013), we obtain a palindrome (9990999).

The spelling of 31056012 in words is "thirty-one million, fifty-six thousand, twelve".