31013012322 has 64 divisors (see below), whose sum is σ = 72811353600. Its totient is φ = 9768810240.

The previous prime is 31013012273. The next prime is 31013012347. The reversal of 31013012322 is 22321031013.

31013012322 is a `hidden beast` number, since 310 + 1 + 30 + 1 + 2 + 322 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 31013012295 and 31013012304.

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, 137079 + ... + 284282.

It is an arithmetic number, because the mean of its divisors is an integer number (1137677400).

Almost surely, 2^31013012322 is an apocalyptic number.

31013012322 is an abundant number, since it is smaller than the sum of its proper divisors (41798341278).

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

31013012322 is a wasteful number, since it uses less digits than its factorization.

31013012322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421448 (or 421442 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31013012322 its reverse (22321031013), we get a palindrome (53334043335).

The spelling of 31013012322 in words is "thirty-one billion, thirteen million, twelve thousand, three hundred twenty-two".