315205242 has 24 divisors (see below), whose sum is σ = 692932128. Its totient is φ = 95516520.

The previous prime is 315205229. The next prime is 315205273. The reversal of 315205242 is 242502513.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216358 + ... + 217809.

It is an arithmetic number, because the mean of its divisors is an integer number (28872172).

Almost surely, 2^315205242 is an apocalyptic number.

315205242 is an abundant number, since it is smaller than the sum of its proper divisors (377726886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315205242 is a wasteful number, since it uses less digits than its factorization.

315205242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434194 (or 434183 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 315205242 is about 17754.0204460849. The cubic root of 315205242 is about 680.5569557525.

Adding to 315205242 its reverse (242502513), we get a palindrome (557707755).

The spelling of 315205242 in words is "three hundred fifteen million, two hundred five thousand, two hundred forty-two".