12917315 has 4 divisors (see below), whose sum is σ = 15500784. Its totient is φ = 10333848.

The previous prime is 12917309. The next prime is 12917353. The reversal of 12917315 is 51371921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12917315 - 2¹⁴ = 12900931 is a prime.

It is a Duffinian 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, 1291727 + ... + 1291736.

It is an arithmetic number, because the mean of its divisors is an integer number (3875196).

Almost surely, 2^12917315 is an apocalyptic number.

12917315 is a deficient number, since it is larger than the sum of its proper divisors (2583469).

12917315 is an equidigital number, since it uses as much as digits as its factorization.

12917315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583468.

The product of its digits is 1890, while the sum is 29.

The square root of 12917315 is about 3594.0666382247. The cubic root of 12917315 is about 234.6338950107.

The spelling of 12917315 in words is "twelve million, nine hundred seventeen thousand, three hundred fifteen".