31880964 has 24 divisors (see below), whose sum is σ = 75287520. Its totient is φ = 10498624.

The previous prime is 31880963. The next prime is 31880977. The reversal of 31880964 is 46908813.

It is not an unprimeable number, because it can be changed into a prime (31880963) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15009 + ... + 17000.

It is an arithmetic number, because the mean of its divisors is an integer number (3136980).

Almost surely, 2^31880964 is an apocalyptic number.

It is an amenable number.

31880964 is an abundant number, since it is smaller than the sum of its proper divisors (43406556).

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

31880964 is a wasteful number, since it uses less digits than its factorization.

31880964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32099 (or 32097 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 31880964 is about 5646.3230513317. The cubic root of 31880964 is about 317.0860590251.

The spelling of 31880964 in words is "thirty-one million, eight hundred eighty thousand, nine hundred sixty-four".