31032220012 has 24 divisors (see below), whose sum is σ = 54453974400. Its totient is φ = 15473984256.

The previous prime is 31032220001. The next prime is 31032220061. The reversal of 31032220012 is 21002223013.

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, 3776164 + ... + 3784372.

It is an arithmetic number, because the mean of its divisors is an integer number (2268915600).

Almost surely, 2^31032220012 is an apocalyptic number.

It is an amenable number.

31032220012 is a deficient number, since it is larger than the sum of its proper divisors (23421754388).

31032220012 is a wasteful number, since it uses less digits than its factorization.

31032220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665 (or 10663 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31032220012 its reverse (21002223013), we get a palindrome (52034443025).

The spelling of 31032220012 in words is "thirty-one billion, thirty-two million, two hundred twenty thousand, twelve".