1313313979 has 2 divisors, whose sum is σ = 1313313980. Its totient is φ = 1313313978.

The previous prime is 1313313973. The next prime is 1313314003. The reversal of 1313313979 is 9793133131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313313979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313313973) 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 as a sum of consecutive naturals, namely, 656656989 + 656656990.

It is an arithmetic number, because the mean of its divisors is an integer number (656656990).

Almost surely, 2^1313313979 is an apocalyptic number.

1313313979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313313979 is an equidigital number, since it uses as much as digits as its factorization.

1313313979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45927, while the sum is 40.

The square root of 1313313979 is about 36239.6741017355. The cubic root of 1313313979 is about 1095.1060770306.

The spelling of 1313313979 in words is "one billion, three hundred thirteen million, three hundred thirteen thousand, nine hundred seventy-nine".