316745791 has 2 divisors, whose sum is σ = 316745792. Its totient is φ = 316745790.

The previous prime is 316745777. The next prime is 316745843. The reversal of 316745791 is 197547613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 316745791 - 2¹³ = 316737599 is a prime.

It is a super-2 number, since 2×316745791² = 200655792232431362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316745731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158372895 + 158372896.

It is an arithmetic number, because the mean of its divisors is an integer number (158372896).

Almost surely, 2^316745791 is an apocalyptic number.

316745791 is a deficient number, since it is larger than the sum of its proper divisors (1).

316745791 is an equidigital number, since it uses as much as digits as its factorization.

316745791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 43.

The square root of 316745791 is about 17797.3534830322. The cubic root of 316745791 is about 681.6638831021.

The spelling of 316745791 in words is "three hundred sixteen million, seven hundred forty-five thousand, seven hundred ninety-one".