31230808 has 16 divisors (see below), whose sum is σ = 66923280. Its totient is φ = 13384608.

The previous prime is 31230781. The next prime is 31230811. The reversal of 31230808 is 80803213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278791 + ... + 278902.

It is an arithmetic number, because the mean of its divisors is an integer number (4182705).

Almost surely, 2^31230808 is an apocalyptic number.

It is an amenable number.

31230808 is an abundant number, since it is smaller than the sum of its proper divisors (35692472).

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

31230808 is a wasteful number, since it uses less digits than its factorization.

31230808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557706 (or 557702 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 31230808 is about 5588.4530954460. The cubic root of 31230808 is about 314.9157681896.

The spelling of 31230808 in words is "thirty-one million, two hundred thirty thousand, eight hundred eight".