317591641 has 2 divisors, whose sum is σ = 317591642. Its totient is φ = 317591640.

The previous prime is 317591633. The next prime is 317591711. The reversal of 317591641 is 146195713.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317588041 + 3600 = 17821^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 317591641 - 2³ = 317591633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 317591641.

It is not a weakly prime, because it can be changed into another prime (317591611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158795820 + 158795821.

It is an arithmetic number, because the mean of its divisors is an integer number (158795821).

Almost surely, 2^317591641 is an apocalyptic number.

It is an amenable number.

317591641 is a deficient number, since it is larger than the sum of its proper divisors (1).

317591641 is an equidigital number, since it uses as much as digits as its factorization.

317591641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 317591641 is about 17821.1010041467. The cubic root of 317591641 is about 682.2701241602.

The spelling of 317591641 in words is "three hundred seventeen million, five hundred ninety-one thousand, six hundred forty-one".