31222032012 has 24 divisors (see below), whose sum is σ = 80946009200. Its totient is φ = 10407343968.

The previous prime is 31222032001. The next prime is 31222032041. The reversal of 31222032012 is 21023022213.

31222032012 is a `hidden beast` number, since 312 + 2 + 20 + 320 + 12 = 666.

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

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, 144546337 + ... + 144546552.

Almost surely, 2^31222032012 is an apocalyptic number.

It is an amenable number.

31222032012 is an abundant number, since it is smaller than the sum of its proper divisors (49723977188).

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

31222032012 is a wasteful number, since it uses less digits than its factorization.

31222032012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289092902 (or 289092894 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31222032012 its reverse (21023022213), we get a palindrome (52245054225).

The spelling of 31222032012 in words is "thirty-one billion, two hundred twenty-two million, thirty-two thousand, twelve".