317133823 has 2 divisors, whose sum is σ = 317133824. Its totient is φ = 317133822.

The previous prime is 317133809. The next prime is 317133829. The reversal of 317133823 is 328331713.

It is a strong prime.

It is an emirp because it is prime and its reverse (328331713) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317133823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317133829) 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, 158566911 + 158566912.

It is an arithmetic number, because the mean of its divisors is an integer number (158566912).

Almost surely, 2^317133823 is an apocalyptic number.

317133823 is a deficient number, since it is larger than the sum of its proper divisors (1).

317133823 is an equidigital number, since it uses as much as digits as its factorization.

317133823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 317133823 is about 17808.2515424732. The cubic root of 317133823 is about 681.9421288001.

The spelling of 317133823 in words is "three hundred seventeen million, one hundred thirty-three thousand, eight hundred twenty-three".