315748219 has 2 divisors, whose sum is σ = 315748220. Its totient is φ = 315748218.

The previous prime is 315748217. The next prime is 315748229. The reversal of 315748219 is 912847513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315748219 - 2¹ = 315748217 is a prime.

It is a super-2 number, since 2×315748219² = 199393875603343922, which contains 22 as substring.

Together with 315748217, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315748217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157874109 + 157874110.

It is an arithmetic number, because the mean of its divisors is an integer number (157874110).

Almost surely, 2^315748219 is an apocalyptic number.

315748219 is a deficient number, since it is larger than the sum of its proper divisors (1).

315748219 is an equidigital number, since it uses as much as digits as its factorization.

315748219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 315748219 is about 17769.3055294798. The cubic root of 315748219 is about 680.9475105866.

It can be divided in two parts, 31574 and 8219, that added together give a palindrome (39793).

The spelling of 315748219 in words is "three hundred fifteen million, seven hundred forty-eight thousand, two hundred nineteen".