317455823 has 2 divisors, whose sum is σ = 317455824. Its totient is φ = 317455822.

The previous prime is 317455793. The next prime is 317455861. The reversal of 317455823 is 328554713.

It is an a-pointer prime, because the next prime (317455861) can be obtained adding 317455823 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 317455823 - 2²⁴ = 300678607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317355823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158727911 + 158727912.

It is an arithmetic number, because the mean of its divisors is an integer number (158727912).

Almost surely, 2^317455823 is an apocalyptic number.

317455823 is a deficient number, since it is larger than the sum of its proper divisors (1).

317455823 is an equidigital number, since it uses as much as digits as its factorization.

317455823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The square root of 317455823 is about 17817.2900015687. The cubic root of 317455823 is about 682.1728527334.

The spelling of 317455823 in words is "three hundred seventeen million, four hundred fifty-five thousand, eight hundred twenty-three".