316707991 has 2 divisors, whose sum is σ = 316707992. Its totient is φ = 316707990.

The previous prime is 316707983. The next prime is 316708001. The reversal of 316707991 is 199707613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 316707991 - 2³ = 316707983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316707931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158353995 + 158353996.

It is an arithmetic number, because the mean of its divisors is an integer number (158353996).

Almost surely, 2^316707991 is an apocalyptic number.

316707991 is a deficient number, since it is larger than the sum of its proper divisors (1).

316707991 is an equidigital number, since it uses as much as digits as its factorization.

316707991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 316707991 is about 17796.2914957021. The cubic root of 316707991 is about 681.6367657517.

The spelling of 316707991 in words is "three hundred sixteen million, seven hundred seven thousand, nine hundred ninety-one".