31304799 has 20 divisors (see below), whose sum is σ = 49227640. Its totient is φ = 19770480.

The previous prime is 31304797. The next prime is 31304807. The reversal of 31304799 is 99740313.

It is not a de Polignac number, because 31304799 - 2¹ = 31304797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8632 + ... + 11709.

It is an arithmetic number, because the mean of its divisors is an integer number (2461382).

Almost surely, 2^31304799 is an apocalyptic number.

31304799 is a deficient number, since it is larger than the sum of its proper divisors (17922841).

31304799 is a wasteful number, since it uses less digits than its factorization.

31304799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372 (or 20363 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 31304799 is about 5595.0691684733. The cubic root of 31304799 is about 315.1642680631.

The spelling of 31304799 in words is "thirty-one million, three hundred four thousand, seven hundred ninety-nine".