315396919 has 2 divisors, whose sum is σ = 315396920. Its totient is φ = 315396918.

The previous prime is 315396911. The next prime is 315396943. The reversal of 315396919 is 919693513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315396919 - 2³ = 315396911 is a prime.

It is a super-2 number, since 2×315396919² = 198950433029385122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315396911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157698459 + 157698460.

It is an arithmetic number, because the mean of its divisors is an integer number (157698460).

Almost surely, 2^315396919 is an apocalyptic number.

315396919 is a deficient number, since it is larger than the sum of its proper divisors (1).

315396919 is an equidigital number, since it uses as much as digits as its factorization.

315396919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 196830, while the sum is 46.

The square root of 315396919 is about 17759.4177550955. The cubic root of 315396919 is about 680.6948771927.

The spelling of 315396919 in words is "three hundred fifteen million, three hundred ninety-six thousand, nine hundred nineteen".