317845849709 has 2 divisors, whose sum is σ = 317845849710. Its totient is φ = 317845849708.

The previous prime is 317845849693. The next prime is 317845849723. The reversal of 317845849709 is 907948548713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307220775625 + 10625074084 = 554275^2 + 103078^2 .

It is a cyclic number.

It is not a de Polignac number, because 317845849709 - 2⁴ = 317845849693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317845848709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158922924854 + 158922924855.

It is an arithmetic number, because the mean of its divisors is an integer number (158922924855).

Almost surely, 2^317845849709 is an apocalyptic number.

It is an amenable number.

317845849709 is a deficient number, since it is larger than the sum of its proper divisors (1).

317845849709 is an equidigital number, since it uses as much as digits as its factorization.

317845849709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 317845849709 in words is "three hundred seventeen billion, eight hundred forty-five million, eight hundred forty-nine thousand, seven hundred nine".