31146513222 has 64 divisors (see below), whose sum is σ = 68308363008. Its totient is φ = 9389520000.

The previous prime is 31146513187. The next prime is 31146513239. The reversal of 31146513222 is 22231564113.

It is a self number, because there is not a number n which added to its sum of digits gives 31146513222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19213572 + ... + 19215192.

It is an arithmetic number, because the mean of its divisors is an integer number (1067318172).

Almost surely, 2^31146513222 is an apocalyptic number.

31146513222 is an abundant number, since it is smaller than the sum of its proper divisors (37161849786).

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

31146513222 is a wasteful number, since it uses less digits than its factorization.

31146513222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965.

The product of its digits is 8640, while the sum is 30.

The spelling of 31146513222 in words is "thirty-one billion, one hundred forty-six million, five hundred thirteen thousand, two hundred twenty-two".