313345909 has 2 divisors, whose sum is σ = 313345910. Its totient is φ = 313345908.

The previous prime is 313345867. The next prime is 313345913. The reversal of 313345909 is 909543313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248945284 + 64400625 = 15778^2 + 8025^2 .

It is a cyclic number.

It is not a de Polignac number, because 313345909 - 2²¹ = 311248757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313345919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156672954 + 156672955.

It is an arithmetic number, because the mean of its divisors is an integer number (156672955).

Almost surely, 2^313345909 is an apocalyptic number.

It is an amenable number.

313345909 is a deficient number, since it is larger than the sum of its proper divisors (1).

313345909 is an equidigital number, since it uses as much as digits as its factorization.

313345909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 313345909 is about 17701.5792798270. The cubic root of 313345909 is about 679.2161592363.

The spelling of 313345909 in words is "three hundred thirteen million, three hundred forty-five thousand, nine hundred nine".