31113311103012 has 24 divisors (see below), whose sum is σ = 72666021069376. Its totient is φ = 10361347249248.

The previous prime is 31113311102977. The next prime is 31113311103031. The reversal of 31113311103012 is 21030111331113.

It is a self number, because there is not a number n which added to its sum of digits gives 31113311103012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219543183 + ... + 1219568694.

Almost surely, 2^{31113311103012} is an apocalyptic number.

It is an amenable number.

31113311103012 is an abundant number, since it is smaller than the sum of its proper divisors (41552709966364).

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

31113311103012 is a wasteful number, since it uses less digits than its factorization.

31113311103012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439112947 (or 2439112945 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 31113311103012 its reverse (21030111331113), we get a palindrome (52143422434125).

The spelling of 31113311103012 in words is "thirty-one trillion, one hundred thirteen billion, three hundred eleven million, one hundred three thousand, twelve".