31480664 has 16 divisors (see below), whose sum is σ = 59220720. Its totient is φ = 15688480.

The previous prime is 31480649. The next prime is 31480681. The reversal of 31480664 is 46608413.

It is a self number, because there is not a number n which added to its sum of digits gives 31480664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3839 + ... + 8814.

It is an arithmetic number, because the mean of its divisors is an integer number (3701295).

Almost surely, 2^31480664 is an apocalyptic number.

It is an amenable number.

31480664 is a deficient number, since it is larger than the sum of its proper divisors (27740056).

31480664 is a wasteful number, since it uses less digits than its factorization.

31480664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970 (or 12966 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 31480664 is about 5610.7632279397. The cubic root of 31480664 is about 315.7533459528.

The spelling of 31480664 in words is "thirty-one million, four hundred eighty thousand, six hundred sixty-four".