31311330000012 has 72 divisors (see below), whose sum is σ = 79226448485184. Its totient is φ = 10426777848576.

The previous prime is 31311329999951. The next prime is 31311330000023. The reversal of 31311330000012 is 21000003311313.

It is a happy number.

31311330000012 is a `hidden beast` number, since 313 + 11 + 330 + 0 + 0 + 0 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 31311330000012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 626289288 + ... + 626339280.

It is an arithmetic number, because the mean of its divisors is an integer number (1100367340072).

Almost surely, 2^{31311330000012} is an apocalyptic number.

It is an amenable number.

31311330000012 is an abundant number, since it is smaller than the sum of its proper divisors (47915118485172).

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

31311330000012 is a wasteful number, since it uses less digits than its factorization.

31311330000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66879 (or 66874 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31311330000012 its reverse (21000003311313), we get a palindrome (52311333311325).

The spelling of 31311330000012 in words is "thirty-one trillion, three hundred eleven billion, three hundred thirty million, twelve", and thus it is an aban number.