31489712 has 20 divisors (see below), whose sum is σ = 64600776. Its totient is φ = 14818560.

The previous prime is 31489709. The next prime is 31489721. The reversal of 31489712 is 21798413.

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 3 ways as a sum of consecutive naturals, for example, 57614 + ... + 58157.

Almost surely, 2^31489712 is an apocalyptic number.

It is an amenable number.

31489712 is an abundant number, since it is smaller than the sum of its proper divisors (33111064).

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

31489712 is a wasteful number, since it uses less digits than its factorization.

31489712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115796 (or 115790 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 31489712 is about 5611.5694774279. The cubic root of 31489712 is about 315.7835937541.

The spelling of 31489712 in words is "thirty-one million, four hundred eighty-nine thousand, seven hundred twelve".