317118709 has 2 divisors, whose sum is σ = 317118710. Its totient is φ = 317118708.

The previous prime is 317118691. The next prime is 317118713. The reversal of 317118709 is 907811713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310112100 + 7006609 = 17610^2 + 2647^2 .

It is a cyclic number.

It is not a de Polignac number, because 317118709 - 2⁵ = 317118677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317118409) 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, 158559354 + 158559355.

It is an arithmetic number, because the mean of its divisors is an integer number (158559355).

Almost surely, 2^317118709 is an apocalyptic number.

It is an amenable number.

317118709 is a deficient number, since it is larger than the sum of its proper divisors (1).

317118709 is an equidigital number, since it uses as much as digits as its factorization.

317118709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 317118709 is about 17807.8271835730. The cubic root of 317118709 is about 681.9312952693.

The spelling of 317118709 in words is "three hundred seventeen million, one hundred eighteen thousand, seven hundred nine".