316291 has 2 divisors, whose sum is σ = 316292. Its totient is φ = 316290.

The previous prime is 316271. The next prime is 316297. The reversal of 316291 is 192613.

It is a strong prime.

It is an emirp because it is prime and its reverse (192613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316291 - 2⁵ = 316259 is a prime.

316291 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (316297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158145 + 158146.

It is an arithmetic number, because the mean of its divisors is an integer number (158146).

2³¹⁶²⁹¹ is an apocalyptic number.

316291 is a deficient number, since it is larger than the sum of its proper divisors (1).

316291 is an equidigital number, since it uses as much as digits as its factorization.

316291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 22.

The square root of 316291 is about 562.3975462251. The cubic root of 316291 is about 68.1337477194.

The spelling of 316291 in words is "three hundred sixteen thousand, two hundred ninety-one".