316306691 has 2 divisors, whose sum is σ = 316306692. Its totient is φ = 316306690.

The previous prime is 316306687. The next prime is 316306693. The reversal of 316306691 is 196603613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316306691 - 2² = 316306687 is a prime.

Together with 316306693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316306693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158153345 + 158153346.

It is an arithmetic number, because the mean of its divisors is an integer number (158153346).

Almost surely, 2^316306691 is an apocalyptic number.

316306691 is a deficient number, since it is larger than the sum of its proper divisors (1).

316306691 is an equidigital number, since it uses as much as digits as its factorization.

316306691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 316306691 is about 17785.0131009229. The cubic root of 316306691 is about 681.3487439171.

The spelling of 316306691 in words is "three hundred sixteen million, three hundred six thousand, six hundred ninety-one".