317110891 has 2 divisors, whose sum is σ = 317110892. Its totient is φ = 317110890.

The previous prime is 317110861. The next prime is 317110897. The reversal of 317110891 is 198011713.

It is a strong prime.

It is an emirp because it is prime and its reverse (198011713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317110891 - 2¹³ = 317102699 is a prime.

It is not a weakly prime, because it can be changed into another prime (317110897) 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, 158555445 + 158555446.

It is an arithmetic number, because the mean of its divisors is an integer number (158555446).

Almost surely, 2^317110891 is an apocalyptic number.

317110891 is a deficient number, since it is larger than the sum of its proper divisors (1).

317110891 is an equidigital number, since it uses as much as digits as its factorization.

317110891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The square root of 317110891 is about 17807.6076720036. The cubic root of 317110891 is about 681.9256912872.

The spelling of 317110891 in words is "three hundred seventeen million, one hundred ten thousand, eight hundred ninety-one".