317117149 has 2 divisors, whose sum is σ = 317117150. Its totient is φ = 317117148.

The previous prime is 317117111. The next prime is 317117159. The reversal of 317117149 is 941711713.

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., 306600100 + 10517049 = 17510^2 + 3243^2 .

It is a cyclic number.

It is not a de Polignac number, because 317117149 - 2¹¹ = 317115101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317117159) 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, 158558574 + 158558575.

It is an arithmetic number, because the mean of its divisors is an integer number (158558575).

Almost surely, 2^317117149 is an apocalyptic number.

It is an amenable number.

317117149 is a deficient number, since it is larger than the sum of its proper divisors (1).

317117149 is an equidigital number, since it uses as much as digits as its factorization.

317117149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 34.

The square root of 317117149 is about 17807.7833825549. The cubic root of 317117149 is about 681.9301770607.

The spelling of 317117149 in words is "three hundred seventeen million, one hundred seventeen thousand, one hundred forty-nine".