315142238 has 16 divisors (see below), whose sum is σ = 483741504. Its totient is φ = 153908640.

The previous prime is 315142237. The next prime is 315142253. The reversal of 315142238 is 832241513.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 315142238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315142231) 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 in 7 ways as a sum of consecutive naturals, for example, 47756 + ... + 53952.

It is an arithmetic number, because the mean of its divisors is an integer number (30233844).

Almost surely, 2^315142238 is an apocalyptic number.

315142238 is a deficient number, since it is larger than the sum of its proper divisors (168599266).

315142238 is a wasteful number, since it uses less digits than its factorization.

315142238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6787.

The product of its digits is 5760, while the sum is 29.

The square root of 315142238 is about 17752.2459987462. The cubic root of 315142238 is about 680.5116089309.

The spelling of 315142238 in words is "three hundred fifteen million, one hundred forty-two thousand, two hundred thirty-eight".