31287980076 has 12 divisors (see below), whose sum is σ = 73005286872. Its totient is φ = 10429326688.

The previous prime is 31287980069. The next prime is 31287980077. The reversal of 31287980076 is 67008978213.

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

It is not an unprimeable number, because it can be changed into a prime (31287980077) 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, 1303665825 + ... + 1303665848.

It is an arithmetic number, because the mean of its divisors is an integer number (6083773906).

Almost surely, 2^31287980076 is an apocalyptic number.

It is an amenable number.

31287980076 is an abundant number, since it is smaller than the sum of its proper divisors (41717306796).

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

31287980076 is a wasteful number, since it uses less digits than its factorization.

31287980076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607331680 (or 2607331678 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 31287980076 in words is "thirty-one billion, two hundred eighty-seven million, nine hundred eighty thousand, seventy-six".