317172311 has 2 divisors, whose sum is σ = 317172312. Its totient is φ = 317172310.

The previous prime is 317172307. The next prime is 317172337. The reversal of 317172311 is 113271713.

It is an a-pointer prime, because the next prime (317172337) can be obtained adding 317172311 to its sum of digits (26).

It is a weak prime.

It is an emirp because it is prime and its reverse (113271713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317172311 - 2² = 317172307 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317174311) 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, 158586155 + 158586156.

It is an arithmetic number, because the mean of its divisors is an integer number (158586156).

Almost surely, 2^317172311 is an apocalyptic number.

317172311 is a deficient number, since it is larger than the sum of its proper divisors (1).

317172311 is an equidigital number, since it uses as much as digits as its factorization.

317172311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882, while the sum is 26.

The square root of 317172311 is about 17809.3321323401. The cubic root of 317172311 is about 681.9697149746.

The spelling of 317172311 in words is "three hundred seventeen million, one hundred seventy-two thousand, three hundred eleven".