316649297 has 2 divisors, whose sum is σ = 316649298. Its totient is φ = 316649296.

The previous prime is 316649237. The next prime is 316649351. The reversal of 316649297 is 792946613.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193794241 + 122855056 = 13921^2 + 11084^2 .

It is a cyclic number.

It is not a de Polignac number, because 316649297 - 2²⁴ = 299872081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316649237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158324648 + 158324649.

It is an arithmetic number, because the mean of its divisors is an integer number (158324649).

Almost surely, 2^316649297 is an apocalyptic number.

It is an amenable number.

316649297 is a deficient number, since it is larger than the sum of its proper divisors (1).

316649297 is an equidigital number, since it uses as much as digits as its factorization.

316649297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 316649297 is about 17794.6423678589. The cubic root of 316649297 is about 681.5946549733.

The spelling of 316649297 in words is "three hundred sixteen million, six hundred forty-nine thousand, two hundred ninety-seven".