13312913 has 2 divisors, whose sum is σ = 13312914. Its totient is φ = 13312912.

The previous prime is 13312909. The next prime is 13312927. The reversal of 13312913 is 31921331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7441984 + 5870929 = 2728^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 13312913 - 2² = 13312909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13312903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6656456 + 6656457.

It is an arithmetic number, because the mean of its divisors is an integer number (6656457).

Almost surely, 2^13312913 is an apocalyptic number.

It is an amenable number.

13312913 is a deficient number, since it is larger than the sum of its proper divisors (1).

13312913 is an equidigital number, since it uses as much as digits as its factorization.

13312913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 23.

The square root of 13312913 is about 3648.6864759801. The cubic root of 13312913 is about 237.0051035356.

The spelling of 13312913 in words is "thirteen million, three hundred twelve thousand, nine hundred thirteen".