317806826209 has 2 divisors, whose sum is σ = 317806826210. Its totient is φ = 317806826208.

The previous prime is 317806826203. The next prime is 317806826219. The reversal of 317806826209 is 902628608713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178677826209 + 139129000000 = 422703^2 + 373000^2 .

It is a cyclic number.

It is not a de Polignac number, because 317806826209 - 2¹⁷ = 317806695137 is a prime.

It is not a weakly prime, because it can be changed into another prime (317806826203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158903413104 + 158903413105.

It is an arithmetic number, because the mean of its divisors is an integer number (158903413105).

Almost surely, 2^317806826209 is an apocalyptic number.

It is an amenable number.

317806826209 is a deficient number, since it is larger than the sum of its proper divisors (1).

317806826209 is an equidigital number, since it uses as much as digits as its factorization.

317806826209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 317806826209 in words is "three hundred seventeen billion, eight hundred six million, eight hundred twenty-six thousand, two hundred nine".