316579493 has 2 divisors, whose sum is σ = 316579494. Its totient is φ = 316579492.

The previous prime is 316579477. The next prime is 316579499. The reversal of 316579493 is 394975613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313750369 + 2829124 = 17713^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 316579493 - 2⁴ = 316579477 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316579499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158289746 + 158289747.

It is an arithmetic number, because the mean of its divisors is an integer number (158289747).

Almost surely, 2^316579493 is an apocalyptic number.

It is an amenable number.

316579493 is a deficient number, since it is larger than the sum of its proper divisors (1).

316579493 is an equidigital number, since it uses as much as digits as its factorization.

316579493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The square root of 316579493 is about 17792.6808828799. The cubic root of 316579493 is about 681.5445664050.

The spelling of 316579493 in words is "three hundred sixteen million, five hundred seventy-nine thousand, four hundred ninety-three".