31033112012 has 12 divisors (see below), whose sum is σ = 62066224080. Its totient is φ = 13299905136.

The previous prime is 31033111987. The next prime is 31033112027. The reversal of 31033112012 is 21021133013.

31033112012 is an admirable number.

It is a super-2 number, since 2×31033112012² (a number of 22 digits) contains 22 as substring.

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, 554162687 + ... + 554162742.

It is an arithmetic number, because the mean of its divisors is an integer number (5172185340).

Almost surely, 2^31033112012 is an apocalyptic number.

It is an amenable number.

31033112012 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.

31033112012 is a wasteful number, since it uses less digits than its factorization.

31033112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108325440 (or 1108325438 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31033112012 its reverse (21021133013), we get a palindrome (52054245025).

The spelling of 31033112012 in words is "thirty-one billion, thirty-three million, one hundred twelve thousand, twelve".