317423081 has 2 divisors, whose sum is σ = 317423082. Its totient is φ = 317423080.

The previous prime is 317423059. The next prime is 317423131. The reversal of 317423081 is 180324713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317409856 + 13225 = 17816^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 317423081 - 2⁶ = 317423017 is a prime.

It is a super-2 number, since 2×317423081² = 201514824703065122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (317423021) 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, 158711540 + 158711541.

It is an arithmetic number, because the mean of its divisors is an integer number (158711541).

Almost surely, 2^317423081 is an apocalyptic number.

It is an amenable number.

317423081 is a deficient number, since it is larger than the sum of its proper divisors (1).

317423081 is an equidigital number, since it uses as much as digits as its factorization.

317423081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 317423081 is about 17816.3711512754. The cubic root of 317423081 is about 682.1493991063.

Adding to 317423081 its reverse (180324713), we get a palindrome (497747794).

The spelling of 317423081 in words is "three hundred seventeen million, four hundred twenty-three thousand, eighty-one".