317394391 has 2 divisors, whose sum is σ = 317394392. Its totient is φ = 317394390.

The previous prime is 317394359. The next prime is 317394409. The reversal of 317394391 is 193493713.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 317394391 - 2⁵ = 317394359 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317394331) 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, 158697195 + 158697196.

It is an arithmetic number, because the mean of its divisors is an integer number (158697196).

Almost surely, 2^317394391 is an apocalyptic number.

317394391 is a deficient number, since it is larger than the sum of its proper divisors (1).

317394391 is an equidigital number, since it uses as much as digits as its factorization.

317394391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 317394391 is about 17815.5659747312. The cubic root of 317394391 is about 682.1288466669.

The spelling of 317394391 in words is "three hundred seventeen million, three hundred ninety-four thousand, three hundred ninety-one".