31552012 has 12 divisors (see below), whose sum is σ = 55723360. Its totient is φ = 15631056.

The previous prime is 31551997. The next prime is 31552019. The reversal of 31552012 is 21025513.

It is a super-2 number, since 2×31552012² = 1991058922496288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31552019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35748 + ... + 36619.

Almost surely, 2^31552012 is an apocalyptic number.

It is an amenable number.

31552012 is a deficient number, since it is larger than the sum of its proper divisors (24171348).

31552012 is a wasteful number, since it uses less digits than its factorization.

31552012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72480 (or 72478 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 31552012 is about 5617.1177662570. The cubic root of 31552012 is about 315.9917078420.

Adding to 31552012 its reverse (21025513), we get a palindrome (52577525).

The spelling of 31552012 in words is "thirty-one million, five hundred fifty-two thousand, twelve".