315669197 has 2 divisors, whose sum is σ = 315669198. Its totient is φ = 315669196.

The previous prime is 315669157. The next prime is 315669203. The reversal of 315669197 is 791966513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187662601 + 128006596 = 13699^2 + 11314^2 .

It is a cyclic number.

It is not a de Polignac number, because 315669197 - 2²⁸ = 47233741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315669157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157834598 + 157834599.

It is an arithmetic number, because the mean of its divisors is an integer number (157834599).

Almost surely, 2^315669197 is an apocalyptic number.

It is an amenable number.

315669197 is a deficient number, since it is larger than the sum of its proper divisors (1).

315669197 is an equidigital number, since it uses as much as digits as its factorization.

315669197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 315669197 is about 17767.0818369253. The cubic root of 315669197 is about 680.8906991563.

The spelling of 315669197 in words is "three hundred fifteen million, six hundred sixty-nine thousand, one hundred ninety-seven".