315693242 has 16 divisors (see below), whose sum is σ = 476697312. Its totient is φ = 156798000.

The previous prime is 315693233. The next prime is 315693253. The reversal of 315693242 is 242396513.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282068 + ... + 283184.

It is an arithmetic number, because the mean of its divisors is an integer number (29793582).

Almost surely, 2^315693242 is an apocalyptic number.

315693242 is a deficient number, since it is larger than the sum of its proper divisors (161004070).

315693242 is a wasteful number, since it uses less digits than its factorization.

315693242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933.

The product of its digits is 38880, while the sum is 35.

The square root of 315693242 is about 17767.7584967829. The cubic root of 315693242 is about 680.9079868753.

The spelling of 315693242 in words is "three hundred fifteen million, six hundred ninety-three thousand, two hundred forty-two".