315339691 has 2 divisors, whose sum is σ = 315339692. Its totient is φ = 315339690.

The previous prime is 315339679. The next prime is 315339697. The reversal of 315339691 is 196933513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315339691 - 2⁹ = 315339179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315339697) 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, 157669845 + 157669846.

It is an arithmetic number, because the mean of its divisors is an integer number (157669846).

Almost surely, 2^315339691 is an apocalyptic number.

315339691 is a deficient number, since it is larger than the sum of its proper divisors (1).

315339691 is an equidigital number, since it uses as much as digits as its factorization.

315339691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65610, while the sum is 40.

The square root of 315339691 is about 17757.8064805313. The cubic root of 315339691 is about 680.6537045618.

The spelling of 315339691 in words is "three hundred fifteen million, three hundred thirty-nine thousand, six hundred ninety-one".