31699012 has 12 divisors (see below), whose sum is σ = 55513836. Its totient is φ = 15837920.

The previous prime is 31699007. The next prime is 31699013. The reversal of 31699012 is 21099613.

It can be written as a sum of positive squares in 2 ways, for example, as 30316036 + 1382976 = 5506^2 + 1176^2 .

It is a super-2 number, since 2×31699012² = 2009654723552288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31699013) 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, 7062 + ... + 10642.

It is an arithmetic number, because the mean of its divisors is an integer number (4626153).

Almost surely, 2^31699012 is an apocalyptic number.

It is an amenable number.

31699012 is a deficient number, since it is larger than the sum of its proper divisors (23814824).

31699012 is a wasteful number, since it uses less digits than its factorization.

31699012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798 (or 5796 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 31699012 is about 5630.1875634831. The cubic root of 31699012 is about 316.4816800772.

The spelling of 31699012 in words is "thirty-one million, six hundred ninety-nine thousand, twelve".