315798193 has 2 divisors, whose sum is σ = 315798194. Its totient is φ = 315798192.

The previous prime is 315798187. The next prime is 315798233. The reversal of 315798193 is 391897513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303909489 + 11888704 = 17433^2 + 3448^2 .

It is a cyclic number.

It is not a de Polignac number, because 315798193 - 2²⁵ = 282243761 is a prime.

It is not a weakly prime, because it can be changed into another prime (315798173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157899096 + 157899097.

It is an arithmetic number, because the mean of its divisors is an integer number (157899097).

Almost surely, 2^315798193 is an apocalyptic number.

It is an amenable number.

315798193 is a deficient number, since it is larger than the sum of its proper divisors (1).

315798193 is an equidigital number, since it uses as much as digits as its factorization.

315798193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 315798193 is about 17770.7116627332. The cubic root of 315798193 is about 680.9834335928.

The spelling of 315798193 in words is "three hundred fifteen million, seven hundred ninety-eight thousand, one hundred ninety-three".