313256609 has 2 divisors, whose sum is σ = 313256610. Its totient is φ = 313256608.

The previous prime is 313256543. The next prime is 313256611. The reversal of 313256609 is 906652313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306250000 + 7006609 = 17500^2 + 2647^2 .

It is a cyclic number.

It is not a de Polignac number, because 313256609 - 2²⁰ = 312208033 is a prime.

Together with 313256611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313256509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156628304 + 156628305.

It is an arithmetic number, because the mean of its divisors is an integer number (156628305).

Almost surely, 2^313256609 is an apocalyptic number.

It is an amenable number.

313256609 is a deficient number, since it is larger than the sum of its proper divisors (1).

313256609 is an equidigital number, since it uses as much as digits as its factorization.

313256609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 313256609 is about 17699.0567262778. The cubic root of 313256609 is about 679.1516301604.

The spelling of 313256609 in words is "three hundred thirteen million, two hundred fifty-six thousand, six hundred nine".