315948319 has 2 divisors, whose sum is σ = 315948320. Its totient is φ = 315948318.

The previous prime is 315948313. The next prime is 315948377. The reversal of 315948319 is 913849513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315948319 - 2¹⁷ = 315817247 is a prime.

It is a super-2 number, since 2×315948319² = 199646680557851522, which contains 22 as substring.

It is equal to p_17068498 and since 315948319 and 17068498 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315948313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157974159 + 157974160.

It is an arithmetic number, because the mean of its divisors is an integer number (157974160).

Almost surely, 2^315948319 is an apocalyptic number.

315948319 is a deficient number, since it is larger than the sum of its proper divisors (1).

315948319 is an equidigital number, since it uses as much as digits as its factorization.

315948319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 315948319 is about 17774.9351334963. The cubic root of 315948319 is about 681.0913264660.

The spelling of 315948319 in words is "three hundred fifteen million, nine hundred forty-eight thousand, three hundred nineteen".