31488874 has 16 divisors (see below), whose sum is σ = 47817000. Its totient is φ = 15551424.

The previous prime is 31488859. The next prime is 31488907. The reversal of 31488874 is 47888413.

It can be written as a sum of positive squares in 4 ways, for example, as 28547649 + 2941225 = 5343^2 + 1715^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31488874.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90052 + ... + 90400.

Almost surely, 2^31488874 is an apocalyptic number.

31488874 is a deficient number, since it is larger than the sum of its proper divisors (16328126).

31488874 is a wasteful number, since it uses less digits than its factorization.

31488874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 172032, while the sum is 43.

The square root of 31488874 is about 5611.4948097633. The cubic root of 31488874 is about 315.7807925323.

The spelling of 31488874 in words is "thirty-one million, four hundred eighty-eight thousand, eight hundred seventy-four".