316932397 has 2 divisors, whose sum is σ = 316932398. Its totient is φ = 316932396.

The previous prime is 316932383. The next prime is 316932401. The reversal of 316932397 is 793239613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277355716 + 39576681 = 16654^2 + 6291^2 .

It is an emirp because it is prime and its reverse (793239613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316932397 - 2¹⁹ = 316408109 is a prime.

It is a super-2 number, since 2×316932397² = 200892288536331218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316938397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158466198 + 158466199.

It is an arithmetic number, because the mean of its divisors is an integer number (158466199).

Almost surely, 2^316932397 is an apocalyptic number.

It is an amenable number.

316932397 is a deficient number, since it is larger than the sum of its proper divisors (1).

316932397 is an equidigital number, since it uses as much as digits as its factorization.

316932397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 43.

The square root of 316932397 is about 17802.5952321565. The cubic root of 316932397 is about 681.7977208174.

The spelling of 316932397 in words is "three hundred sixteen million, nine hundred thirty-two thousand, three hundred ninety-seven".