315642799 has 2 divisors, whose sum is σ = 315642800. Its totient is φ = 315642798.

The previous prime is 315642793. The next prime is 315642851. The reversal of 315642799 is 997246513.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315642799 - 2⁹ = 315642287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315642793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157821399 + 157821400.

It is an arithmetic number, because the mean of its divisors is an integer number (157821400).

Almost surely, 2^315642799 is an apocalyptic number.

315642799 is a deficient number, since it is larger than the sum of its proper divisors (1).

315642799 is an equidigital number, since it uses as much as digits as its factorization.

315642799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 315642799 is about 17766.3389306857. The cubic root of 315642799 is about 680.8717186815.

The spelling of 315642799 in words is "three hundred fifteen million, six hundred forty-two thousand, seven hundred ninety-nine".