231215008 has 12 divisors (see below), whose sum is σ = 455204610. Its totient is φ = 115607488.

The previous prime is 231214993. The next prime is 231215029. The reversal of 231215008 is 800512132.

It can be written as a sum of positive squares in only one way, i.e., 176039824 + 55175184 = 13268^2 + 7428^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231215008.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612703 + ... + 3612766.

Almost surely, 2^231215008 is an apocalyptic number.

It is an amenable number.

231215008 is a deficient number, since it is larger than the sum of its proper divisors (223989602).

231215008 is an equidigital number, since it uses as much as digits as its factorization.

231215008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7225479 (or 7225471 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 231215008 is about 15205.7557523459. The cubic root of 231215008 is about 613.7695521001.

The spelling of 231215008 in words is "two hundred thirty-one million, two hundred fifteen thousand, eight".