316263691 has 2 divisors, whose sum is σ = 316263692. Its totient is φ = 316263690.

The previous prime is 316263641. The next prime is 316263707. The reversal of 316263691 is 196362613.

It is a strong prime.

It is an emirp because it is prime and its reverse (196362613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316263691 - 2¹¹ = 316261643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 316263691.

It is not a weakly prime, because it can be changed into another prime (316263601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158131845 + 158131846.

It is an arithmetic number, because the mean of its divisors is an integer number (158131846).

Almost surely, 2^316263691 is an apocalyptic number.

316263691 is a deficient number, since it is larger than the sum of its proper divisors (1).

316263691 is an equidigital number, since it uses as much as digits as its factorization.

316263691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 316263691 is about 17783.8041768346. The cubic root of 316263691 is about 681.3178674244.

The spelling of 316263691 in words is "three hundred sixteen million, two hundred sixty-three thousand, six hundred ninety-one".