31579012 has 12 divisors (see below), whose sum is σ = 55341580. Its totient is φ = 15767136.

The previous prime is 31579003. The next prime is 31579039. The reversal of 31579012 is 21097513.

It can be written as a sum of positive squares in 2 ways, for example, as 27185796 + 4393216 = 5214^2 + 2096^2 .

It is a super-2 number, since 2×31579012² = 1994467997792288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2187 + ... + 8242.

Almost surely, 2^31579012 is an apocalyptic number.

It is an amenable number.

31579012 is a deficient number, since it is larger than the sum of its proper divisors (23762568).

31579012 is a wasteful number, since it uses less digits than its factorization.

31579012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11190 (or 11188 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 31579012 is about 5619.5206201241. The cubic root of 31579012 is about 316.0818166612.

The spelling of 31579012 in words is "thirty-one million, five hundred seventy-nine thousand, twelve".