31230308 has 12 divisors (see below), whose sum is σ = 55469232. Its totient is φ = 15381960.

The previous prime is 31230271. The next prime is 31230313. The reversal of 31230308 is 80303213.

It is a self number, because there is not a number n which added to its sum of digits gives 31230308.

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, 57998 + ... + 58533.

It is an arithmetic number, because the mean of its divisors is an integer number (4622436).

Almost surely, 2^31230308 is an apocalyptic number.

It is an amenable number.

31230308 is a deficient number, since it is larger than the sum of its proper divisors (24238924).

31230308 is a wasteful number, since it uses less digits than its factorization.

31230308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116602 (or 116600 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 31230308 is about 5588.4083601684. The cubic root of 31230308 is about 314.9140875977.

The spelling of 31230308 in words is "thirty-one million, two hundred thirty thousand, three hundred eight".