315231142 has 8 divisors (see below), whose sum is σ = 472932000. Its totient is φ = 157587144.

The previous prime is 315231127. The next prime is 315231143. The reversal of 315231142 is 241132513.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315231143) 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 3 ways as a sum of consecutive naturals, for example, 4659 + ... + 25537.

It is an arithmetic number, because the mean of its divisors is an integer number (59116500).

Almost surely, 2^315231142 is an apocalyptic number.

315231142 is a deficient number, since it is larger than the sum of its proper divisors (157700858).

315231142 is a wasteful number, since it uses less digits than its factorization.

315231142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28430.

The product of its digits is 720, while the sum is 22.

The square root of 315231142 is about 17754.7498433518. The cubic root of 315231142 is about 680.5755953985.

Adding to 315231142 its reverse (241132513), we get a palindrome (556363655).

The spelling of 315231142 in words is "three hundred fifteen million, two hundred thirty-one thousand, one hundred forty-two".