31071996012 has 48 divisors (see below), whose sum is σ = 76862815232. Its totient is φ = 9752322240.

The previous prime is 31071995993. The next prime is 31071996029. The reversal of 31071996012 is 21069917013.

It is a happy 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, 1114978 + ... + 1142505.

Almost surely, 2^31071996012 is an apocalyptic number.

It is an amenable number.

31071996012 is an abundant number, since it is smaller than the sum of its proper divisors (45790819220).

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

31071996012 is a wasteful number, since it uses less digits than its factorization.

31071996012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257558 (or 2257556 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The spelling of 31071996012 in words is "thirty-one billion, seventy-one million, nine hundred ninety-six thousand, twelve".