12313979 has 4 divisors (see below), whose sum is σ = 12377976. Its totient is φ = 12249984.

The previous prime is 12313937. The next prime is 12313999. The reversal of 12313979 is 97931321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97931321 = 173 ⋅566077.

It is a cyclic number.

It is not a de Polignac number, because 12313979 - 2²⁰ = 11265403 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12313909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31709 + ... + 32094.

It is an arithmetic number, because the mean of its divisors is an integer number (3094494).

Almost surely, 2^12313979 is an apocalyptic number.

12313979 is a deficient number, since it is larger than the sum of its proper divisors (63997).

12313979 is an equidigital number, since it uses as much as digits as its factorization.

12313979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63996.

The product of its digits is 10206, while the sum is 35.

The square root of 12313979 is about 3509.1279543499. The cubic root of 12313979 is about 230.9224391822.

The spelling of 12313979 in words is "twelve million, three hundred thirteen thousand, nine hundred seventy-nine".