31331133013012 has 12 divisors (see below), whose sum is σ = 62662266026080. Its totient is φ = 13427628434136.

The previous prime is 31331133012997. The next prime is 31331133013031. The reversal of 31331133013012 is 21031033113313.

31331133013012 is an admirable number.

It is a super-2 number, since 2×31331133013012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559484518062 + ... + 559484518117.

Almost surely, 2^{31331133013012} is an apocalyptic number.

It is an amenable number.

31331133013012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31331133013012 is a wasteful number, since it uses less digits than its factorization.

31331133013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118969036190 (or 1118969036188 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 31331133013012 its reverse (21031033113313), we get a palindrome (52362166126325).

The spelling of 31331133013012 in words is "thirty-one trillion, three hundred thirty-one billion, one hundred thirty-three million, thirteen thousand, twelve".