31672881012 has 12 divisors (see below), whose sum is σ = 73903389056. Its totient is φ = 10557627000.

The previous prime is 31672881011. The next prime is 31672881049. The reversal of 31672881012 is 21018827613.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31672881011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319703364 + ... + 1319703387.

Almost surely, 2^31672881012 is an apocalyptic number.

It is an amenable number.

31672881012 is an abundant number, since it is smaller than the sum of its proper divisors (42230508044).

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

31672881012 is a wasteful number, since it uses less digits than its factorization.

31672881012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639406758 (or 2639406756 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 31672881012 in words is "thirty-one billion, six hundred seventy-two million, eight hundred eighty-one thousand, twelve".