317890423 has 2 divisors, whose sum is σ = 317890424. Its totient is φ = 317890422.

The previous prime is 317890409. The next prime is 317890439. The reversal of 317890423 is 324098713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 317890423 - 2⁹ = 317889911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317890723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158945211 + 158945212.

It is an arithmetic number, because the mean of its divisors is an integer number (158945212).

Almost surely, 2^317890423 is an apocalyptic number.

317890423 is a deficient number, since it is larger than the sum of its proper divisors (1).

317890423 is an equidigital number, since it uses as much as digits as its factorization.

317890423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 317890423 is about 17829.4818488929. The cubic root of 317890423 is about 682.4840111288.

The spelling of 317890423 in words is "three hundred seventeen million, eight hundred ninety thousand, four hundred twenty-three".