31386304828 has 12 divisors (see below), whose sum is σ = 55046224912. Its totient is φ = 15658812000.

The previous prime is 31386304799. The next prime is 31386304849. The reversal of 31386304828 is 82840368313.

It is a super-2 number, since 2×31386304828² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8583048 + ... + 8586703.

Almost surely, 2^31386304828 is an apocalyptic number.

It is an amenable number.

31386304828 is a deficient number, since it is larger than the sum of its proper divisors (23659920084).

31386304828 is a wasteful number, since it uses less digits than its factorization.

31386304828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17170212 (or 17170210 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 31386304828 in words is "thirty-one billion, three hundred eighty-six million, three hundred four thousand, eight hundred twenty-eight".