31020032322012 has 48 divisors (see below), whose sum is σ = 72697519210400. Its totient is φ = 10294663368960.

The previous prime is 31020032321987. The next prime is 31020032322079. The reversal of 31020032322012 is 21022323002013.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31020032322012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267676962 + ... + 267792822.

Almost surely, 2^{31020032322012} is an apocalyptic number.

It is an amenable number.

31020032322012 is an abundant number, since it is smaller than the sum of its proper divisors (41677486888388).

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

31020032322012 is a wasteful number, since it uses less digits than its factorization.

31020032322012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213526 (or 213524 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31020032322012 its reverse (21022323002013), we get a palindrome (52042355324025).

The spelling of 31020032322012 in words is "thirty-one trillion, twenty billion, thirty-two million, three hundred twenty-two thousand, twelve".