31004768 has 24 divisors (see below), whose sum is σ = 61321680. Its totient is φ = 15431040.

The previous prime is 31004767. The next prime is 31004773. The reversal of 31004768 is 86740013.

It is a super-2 number, since 2×31004768² = 1922591277467648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31004768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004761) 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, 5213 + ... + 9443.

It is an arithmetic number, because the mean of its divisors is an integer number (2555070).

Almost surely, 2^31004768 is an apocalyptic number.

It is an amenable number.

31004768 is a deficient number, since it is larger than the sum of its proper divisors (30316912).

31004768 is a wasteful number, since it uses less digits than its factorization.

31004768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470 (or 4462 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 31004768 is about 5568.1925254071. The cubic root of 31004768 is about 314.1541699005.

The spelling of 31004768 in words is "thirty-one million, four thousand, seven hundred sixty-eight".