315344999 has 2 divisors, whose sum is σ = 315345000. Its totient is φ = 315344998.

The previous prime is 315344987. The next prime is 315345001. The reversal of 315344999 is 999443513.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315344999 is a prime.

Together with 315345001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315347999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157672499 + 157672500.

It is an arithmetic number, because the mean of its divisors is an integer number (157672500).

Almost surely, 2^315344999 is an apocalyptic number.

315344999 is a deficient number, since it is larger than the sum of its proper divisors (1).

315344999 is an equidigital number, since it uses as much as digits as its factorization.

315344999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 47.

The square root of 315344999 is about 17757.9559352984. The cubic root of 315344999 is about 680.6575236070.

The spelling of 315344999 in words is "three hundred fifteen million, three hundred forty-four thousand, nine hundred ninety-nine".