315637993 has 8 divisors (see below), whose sum is σ = 359303616. Its totient is φ = 274467600.

The previous prime is 315637957. The next prime is 315638021. The reversal of 315637993 is 399736513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315637993 - 2²¹ = 313540841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315637913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623538 + ... + 624043.

It is an arithmetic number, because the mean of its divisors is an integer number (44912952).

Almost surely, 2^315637993 is an apocalyptic number.

It is an amenable number.

315637993 is a deficient number, since it is larger than the sum of its proper divisors (43665623).

315637993 is a wasteful number, since it uses less digits than its factorization.

315637993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247615.

The product of its digits is 459270, while the sum is 46.

The square root of 315637993 is about 17766.2036743926. The cubic root of 315637993 is about 680.8682629966.

The spelling of 315637993 in words is "three hundred fifteen million, six hundred thirty-seven thousand, nine hundred ninety-three".