31504068 has 18 divisors (see below), whose sum is σ = 79635374. Its totient is φ = 10501344.

The previous prime is 31504051. The next prime is 31504087. The reversal of 31504068 is 86040513.

It can be written as a sum of positive squares in only one way, i.e., 31337604 + 166464 = 5598^2 + 408^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437521 + ... + 437592.

Almost surely, 2^31504068 is an apocalyptic number.

It is an amenable number.

31504068 is an abundant number, since it is smaller than the sum of its proper divisors (48131306).

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

31504068 is a wasteful number, since it uses less digits than its factorization.

31504068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875123 (or 875118 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 31504068 is about 5612.8484747052. The cubic root of 31504068 is about 315.8315745097.

The spelling of 31504068 in words is "thirty-one million, five hundred four thousand, sixty-eight".