315335242 has 4 divisors (see below), whose sum is σ = 473002866. Its totient is φ = 157667620.

The previous prime is 315335233. The next prime is 315335243. The reversal of 315335242 is 242533513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242533513 = 12037 ⋅20149.

It can be written as a sum of positive squares in only one way, i.e., 310499641 + 4835601 = 17621^2 + 2199^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 315335242.

It is not an unprimeable number, because it can be changed into a prime (315335243) by changing a digit.

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 as a sum of consecutive naturals, namely, 78833809 + ... + 78833812.

Almost surely, 2^315335242 is an apocalyptic number.

315335242 is a deficient number, since it is larger than the sum of its proper divisors (157667624).

315335242 is a wasteful number, since it uses less digits than its factorization.

315335242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157667623.

The product of its digits is 10800, while the sum is 28.

The square root of 315335242 is about 17757.6812112393. The cubic root of 315335242 is about 680.6505035243.

Adding to 315335242 its reverse (242533513), we get a palindrome (557868755).

The spelling of 315335242 in words is "three hundred fifteen million, three hundred thirty-five thousand, two hundred forty-two".