315197219 has 2 divisors, whose sum is σ = 315197220. Its totient is φ = 315197218.

The previous prime is 315197209. The next prime is 315197269. The reversal of 315197219 is 912791513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315197219 - 2⁸ = 315196963 is a prime.

It is a super-2 number, since 2×315197219² = 198698573730667922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315197209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157598609 + 157598610.

It is an arithmetic number, because the mean of its divisors is an integer number (157598610).

Almost surely, 2^315197219 is an apocalyptic number.

315197219 is a deficient number, since it is larger than the sum of its proper divisors (1).

315197219 is an equidigital number, since it uses as much as digits as its factorization.

315197219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 38.

The square root of 315197219 is about 17753.7944958254. The cubic root of 315197219 is about 680.5511815731.

The spelling of 315197219 in words is "three hundred fifteen million, one hundred ninety-seven thousand, two hundred nineteen".