12313504979 has 4 divisors (see below), whose sum is σ = 12313730520. Its totient is φ = 12313279440.

The previous prime is 12313504939. The next prime is 12313505011. The reversal of 12313504979 is 97940531321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12313504979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12313504919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26252 + ... + 159110.

It is an arithmetic number, because the mean of its divisors is an integer number (3078432630).

Almost surely, 2^12313504979 is an apocalyptic number.

12313504979 is a deficient number, since it is larger than the sum of its proper divisors (225541).

12313504979 is an equidigital number, since it uses as much as digits as its factorization.

12313504979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225540.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 12313504979 in words is "twelve billion, three hundred thirteen million, five hundred four thousand, nine hundred seventy-nine".