316711391 has 2 divisors, whose sum is σ = 316711392. Its totient is φ = 316711390.

The previous prime is 316711363. The next prime is 316711433. The reversal of 316711391 is 193117613.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 316711391 - 2⁶ = 316711327 is a prime.

It is a super-2 number, since 2×316711391² = 200612210378309762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316711321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158355695 + 158355696.

It is an arithmetic number, because the mean of its divisors is an integer number (158355696).

Almost surely, 2^316711391 is an apocalyptic number.

316711391 is a deficient number, since it is larger than the sum of its proper divisors (1).

316711391 is an equidigital number, since it uses as much as digits as its factorization.

316711391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 32.

The square root of 316711391 is about 17796.3870209658. The cubic root of 316711391 is about 681.6392049668.

The spelling of 316711391 in words is "three hundred sixteen million, seven hundred eleven thousand, three hundred ninety-one".