31904334480 has 80 divisors (see below), whose sum is σ = 102093894144. Its totient is φ = 8233374720.

The previous prime is 31904334463. The next prime is 31904334487. The reversal of 31904334480 is 8443340913.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×31904334480² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31904334487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2136669 + ... + 2151548.

Almost surely, 2^31904334480 is an apocalyptic number.

31904334480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31904334480 is an abundant number, since it is smaller than the sum of its proper divisors (70189559664).

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

31904334480 is a wasteful number, since it uses less digits than its factorization.

31904334480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288264 (or 4288258 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

It can be divided in two parts, 3190433 and 4480, that added together give a palindrome (3194913).

The spelling of 31904334480 in words is "thirty-one billion, nine hundred four million, three hundred thirty-four thousand, four hundred eighty".