31889056 has 24 divisors (see below), whose sum is σ = 63492660. Its totient is φ = 15763968.

The previous prime is 31888999. The next prime is 31889057. The reversal of 31889056 is 65098813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28944400 + 2944656 = 5380^2 + 1716^2 .

It is a super-2 number, since 2×31889056² = 2033823785142272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31889057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2751 + ... + 8446.

Almost surely, 2^31889056 is an apocalyptic number.

It is an amenable number.

31889056 is a deficient number, since it is larger than the sum of its proper divisors (31603604).

31889056 is a wasteful number, since it uses less digits than its factorization.

31889056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11296 (or 11288 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 31889056 is about 5647.0395783986. The cubic root of 31889056 is about 317.1128842630.

The spelling of 31889056 in words is "thirty-one million, eight hundred eighty-nine thousand, fifty-six".