316315397 has 2 divisors, whose sum is σ = 316315398. Its totient is φ = 316315396.

The previous prime is 316315393. The next prime is 316315409. The reversal of 316315397 is 793513613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244421956 + 71893441 = 15634^2 + 8479^2 .

It is an emirp because it is prime and its reverse (793513613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316315397 - 2² = 316315393 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 316315397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316315393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158157698 + 158157699.

It is an arithmetic number, because the mean of its divisors is an integer number (158157699).

Almost surely, 2^316315397 is an apocalyptic number.

It is an amenable number.

316315397 is a deficient number, since it is larger than the sum of its proper divisors (1).

316315397 is an equidigital number, since it uses as much as digits as its factorization.

316315397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 38.

The square root of 316315397 is about 17785.2578558760. The cubic root of 316315397 is about 681.3549949891.

The spelling of 316315397 in words is "three hundred sixteen million, three hundred fifteen thousand, three hundred ninety-seven".