315980893 has 2 divisors, whose sum is σ = 315980894. Its totient is φ = 315980892.

The previous prime is 315980857. The next prime is 315980927. The reversal of 315980893 is 398089513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252587449 + 63393444 = 15893^2 + 7962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315980893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315980843) 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, 157990446 + 157990447.

It is an arithmetic number, because the mean of its divisors is an integer number (157990447).

Almost surely, 2^315980893 is an apocalyptic number.

It is an amenable number.

315980893 is a deficient number, since it is larger than the sum of its proper divisors (1).

315980893 is an equidigital number, since it uses as much as digits as its factorization.

315980893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 315980893 is about 17775.8514001440. The cubic root of 315980893 is about 681.1147323050.

The spelling of 315980893 in words is "three hundred fifteen million, nine hundred eighty thousand, eight hundred ninety-three".