31488968 has 24 divisors (see below), whose sum is σ = 68682150. Its totient is φ = 13495104.

The previous prime is 31488959. The next prime is 31488971. The reversal of 31488968 is 86988413.

It can be written as a sum of positive squares in only one way, i.e., 22259524 + 9229444 = 4718^2 + 3038^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39773 + ... + 40556.

Almost surely, 2^31488968 is an apocalyptic number.

It is an amenable number.

31488968 is an abundant number, since it is smaller than the sum of its proper divisors (37193182).

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

31488968 is a wasteful number, since it uses less digits than its factorization.

31488968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80349 (or 80338 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 31488968 is about 5611.5031854219. The cubic root of 31488968 is about 315.7811067530.

The spelling of 31488968 in words is "thirty-one million, four hundred eighty-eight thousand, nine hundred sixty-eight".