317421233 has 2 divisors, whose sum is σ = 317421234. Its totient is φ = 317421232.

The previous prime is 317421197. The next prime is 317421281. The reversal of 317421233 is 332124713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266897569 + 50523664 = 16337^2 + 7108^2 .

It is a cyclic number.

It is not a de Polignac number, because 317421233 - 2⁸ = 317420977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (317481233) 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, 158710616 + 158710617.

It is an arithmetic number, because the mean of its divisors is an integer number (158710617).

Almost surely, 2^317421233 is an apocalyptic number.

It is an amenable number.

317421233 is a deficient number, since it is larger than the sum of its proper divisors (1).

317421233 is an equidigital number, since it uses as much as digits as its factorization.

317421233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 26.

The square root of 317421233 is about 17816.3192887869. The cubic root of 317421233 is about 682.1480753058.

Adding to 317421233 its reverse (332124713), we get a palindrome (649545946).

The spelling of 317421233 in words is "three hundred seventeen million, four hundred twenty-one thousand, two hundred thirty-three".