12312815 has 8 divisors (see below), whose sum is σ = 14853888. Its totient is φ = 9797920.

The previous prime is 12312803. The next prime is 12312829. The reversal of 12312815 is 51821321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12312815 - 2⁴ = 12312799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5492 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (1856736).

Almost surely, 2^12312815 is an apocalyptic number.

12312815 is a deficient number, since it is larger than the sum of its proper divisors (2541073).

12312815 is a wasteful number, since it uses less digits than its factorization.

12312815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13089.

The product of its digits is 480, while the sum is 23.

The square root of 12312815 is about 3508.9620972590. The cubic root of 12312815 is about 230.9151628396.

The spelling of 12312815 in words is "twelve million, three hundred twelve thousand, eight hundred fifteen".