317207826157 has 2 divisors, whose sum is σ = 317207826158. Its totient is φ = 317207826156.

The previous prime is 317207826137. The next prime is 317207826163. The reversal of 317207826157 is 751628702713.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284338498756 + 32869327401 = 533234^2 + 181299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317207826157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 317207826157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317207826137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158603913078 + 158603913079.

It is an arithmetic number, because the mean of its divisors is an integer number (158603913079).

Almost surely, 2^317207826157 is an apocalyptic number.

It is an amenable number.

317207826157 is a deficient number, since it is larger than the sum of its proper divisors (1).

317207826157 is an equidigital number, since it uses as much as digits as its factorization.

317207826157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 317207826157 in words is "three hundred seventeen billion, two hundred seven million, eight hundred twenty-six thousand, one hundred fifty-seven".