313345979 has 2 divisors, whose sum is σ = 313345980. Its totient is φ = 313345978.

The previous prime is 313345931. The next prime is 313346041. The reversal of 313345979 is 979543313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313345979 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313345909) 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, 156672989 + 156672990.

It is an arithmetic number, because the mean of its divisors is an integer number (156672990).

Almost surely, 2^313345979 is an apocalyptic number.

313345979 is a deficient number, since it is larger than the sum of its proper divisors (1).

313345979 is an equidigital number, since it uses as much as digits as its factorization.

313345979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 44.

The square root of 313345979 is about 17701.5812570516. The cubic root of 313345979 is about 679.2162098142.

The spelling of 313345979 in words is "three hundred thirteen million, three hundred forty-five thousand, nine hundred seventy-nine".