315353197 has 2 divisors, whose sum is σ = 315353198. Its totient is φ = 315353196.

The previous prime is 315353189. The next prime is 315353219. The reversal of 315353197 is 791353513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304816681 + 10536516 = 17459^2 + 3246^2 .

It is an emirp because it is prime and its reverse (791353513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315353197 - 2³ = 315353189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315353107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157676598 + 157676599.

It is an arithmetic number, because the mean of its divisors is an integer number (157676599).

Almost surely, 2^315353197 is an apocalyptic number.

It is an amenable number.

315353197 is a deficient number, since it is larger than the sum of its proper divisors (1).

315353197 is an equidigital number, since it uses as much as digits as its factorization.

315353197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42525, while the sum is 37.

The square root of 315353197 is about 17758.1867599144. The cubic root of 315353197 is about 680.6634218899.

The spelling of 315353197 in words is "three hundred fifteen million, three hundred fifty-three thousand, one hundred ninety-seven".