31272120704 has 64 divisors (see below), whose sum is σ = 71961469200. Its totient is φ = 13378437120.

The previous prime is 31272120667. The next prime is 31272120743. The reversal of 31272120704 is 40702127213.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629309 + ... + 677180.

Almost surely, 2^31272120704 is an apocalyptic number.

31272120704 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31272120704 is an abundant number, since it is smaller than the sum of its proper divisors (40689348496).

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

31272120704 is a wasteful number, since it uses less digits than its factorization.

31272120704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306531 (or 1306519 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

Adding to 31272120704 its reverse (40702127213), we get a palindrome (71974247917).

The spelling of 31272120704 in words is "thirty-one billion, two hundred seventy-two million, one hundred twenty thousand, seven hundred four".