31486772680 has 32 divisors (see below), whose sum is σ = 77285715840. Its totient is φ = 11449735360.

The previous prime is 31486772627. The next prime is 31486772687. The reversal of 31486772680 is 8627768413.

It is not an unprimeable number, because it can be changed into a prime (31486772687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35779984 + ... + 35780863.

It is an arithmetic number, because the mean of its divisors is an integer number (2415178620).

Almost surely, 2^31486772680 is an apocalyptic number.

It is an amenable number.

31486772680 is an abundant number, since it is smaller than the sum of its proper divisors (45798943160).

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

31486772680 is a wasteful number, since it uses less digits than its factorization.

31486772680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71560869 (or 71560865 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 31486772680 in words is "thirty-one billion, four hundred eighty-six million, seven hundred seventy-two thousand, six hundred eighty".