31079488 has 56 divisors (see below), whose sum is σ = 67994784. Its totient is φ = 13977600.

The previous prime is 31079471. The next prime is 31079507. The reversal of 31079488 is 88497013.

It is a self number, because there is not a number n which added to its sum of digits gives 31079488.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92056 + ... + 92392.

Almost surely, 2^31079488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31079488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33997392).

31079488 is an abundant number, since it is smaller than the sum of its proper divisors (36915296).

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

31079488 is a wasteful number, since it uses less digits than its factorization.

31079488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 31079488 is about 5574.8980259732. The cubic root of 31079488 is about 314.4063329230.

The spelling of 31079488 in words is "thirty-one million, seventy-nine thousand, four hundred eighty-eight".