315212519 has 2 divisors, whose sum is σ = 315212520. Its totient is φ = 315212518.

The previous prime is 315212473. The next prime is 315212537. The reversal of 315212519 is 915212513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315212519 - 2¹⁶ = 315146983 is a prime.

It is a super-2 number, since 2×315212519² = 198717864268650722, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_17030846 and since 315212519 and 17030846 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 315212491 and 315212500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315242519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157606259 + 157606260.

It is an arithmetic number, because the mean of its divisors is an integer number (157606260).

Almost surely, 2^315212519 is an apocalyptic number.

315212519 is a deficient number, since it is larger than the sum of its proper divisors (1).

315212519 is an equidigital number, since it uses as much as digits as its factorization.

315212519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 29.

The square root of 315212519 is about 17754.2253843979. The cubic root of 315212519 is about 680.5621929484.

The spelling of 315212519 in words is "three hundred fifteen million, two hundred twelve thousand, five hundred nineteen".