315250609 has 2 divisors, whose sum is σ = 315250610. Its totient is φ = 315250608.

The previous prime is 315250591. The next prime is 315250613. The reversal of 315250609 is 906052513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245611584 + 69639025 = 15672^2 + 8345^2 .

It is a cyclic number.

It is not a de Polignac number, because 315250609 - 2⁵ = 315250577 is a prime.

It is not a weakly prime, because it can be changed into another prime (315250709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157625304 + 157625305.

It is an arithmetic number, because the mean of its divisors is an integer number (157625305).

Almost surely, 2^315250609 is an apocalyptic number.

It is an amenable number.

315250609 is a deficient number, since it is larger than the sum of its proper divisors (1).

315250609 is an equidigital number, since it uses as much as digits as its factorization.

315250609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 315250609 is about 17755.2980543837. The cubic root of 315250609 is about 680.5896046874.

The spelling of 315250609 in words is "three hundred fifteen million, two hundred fifty thousand, six hundred nine".