12817315 has 16 divisors (see below), whose sum is σ = 17660160. Its totient is φ = 8748000.

The previous prime is 12817307. The next prime is 12817339. The reversal of 12817315 is 51371821.

12817315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12817315 - 2³ = 12817307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8056 + ... + 9514.

It is an arithmetic number, because the mean of its divisors is an integer number (1103760).

Almost surely, 2^12817315 is an apocalyptic number.

12817315 is a deficient number, since it is larger than the sum of its proper divisors (4842845).

12817315 is a wasteful number, since it uses less digits than its factorization.

12817315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722.

The product of its digits is 1680, while the sum is 28.

The square root of 12817315 is about 3580.1277910153. The cubic root of 12817315 is about 234.0268493798.

The spelling of 12817315 in words is "twelve million, eight hundred seventeen thousand, three hundred fifteen".