315272197 has 2 divisors, whose sum is σ = 315272198. Its totient is φ = 315272196.

The previous prime is 315272179. The next prime is 315272231. The reversal of 315272197 is 791272513.

Together with previous prime (315272179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270569601 + 44702596 = 16449^2 + 6686^2 .

It is an emirp because it is prime and its reverse (791272513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315272197 - 2¹⁵ = 315239429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315272297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157636098 + 157636099.

It is an arithmetic number, because the mean of its divisors is an integer number (157636099).

Almost surely, 2^315272197 is an apocalyptic number.

It is an amenable number.

315272197 is a deficient number, since it is larger than the sum of its proper divisors (1).

315272197 is an equidigital number, since it uses as much as digits as its factorization.

315272197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 37.

The square root of 315272197 is about 17755.9059751960. The cubic root of 315272197 is about 680.6051396645.

The spelling of 315272197 in words is "three hundred fifteen million, two hundred seventy-two thousand, one hundred ninety-seven".