315459197 has 2 divisors, whose sum is σ = 315459198. Its totient is φ = 315459196.

The previous prime is 315459173. The next prime is 315459217. The reversal of 315459197 is 791954513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261598276 + 53860921 = 16174^2 + 7339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315459197 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 (315459097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157729598 + 157729599.

It is an arithmetic number, because the mean of its divisors is an integer number (157729599).

Almost surely, 2^315459197 is an apocalyptic number.

It is an amenable number.

315459197 is a deficient number, since it is larger than the sum of its proper divisors (1).

315459197 is an equidigital number, since it uses as much as digits as its factorization.

315459197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 44.

The square root of 315459197 is about 17761.1710481038. The cubic root of 315459197 is about 680.7396773826.

The spelling of 315459197 in words is "three hundred fifteen million, four hundred fifty-nine thousand, one hundred ninety-seven".