315142243 has 24 divisors (see below), whose sum is σ = 363657600. Its totient is φ = 272024064.

The previous prime is 315142237. The next prime is 315142253. The reversal of 315142243 is 342241513.

It is not a de Polignac number, because 315142243 - 2⁵ = 315142211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315142213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 657678 + ... + 658156.

It is an arithmetic number, because the mean of its divisors is an integer number (15152400).

Almost surely, 2^315142243 is an apocalyptic number.

315142243 is a deficient number, since it is larger than the sum of its proper divisors (48515357).

315142243 is a wasteful number, since it uses less digits than its factorization.

315142243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 738 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 315142243 is about 17752.2461395734. The cubic root of 315142243 is about 680.5116125299.

Adding to 315142243 its reverse (342241513), we get a palindrome (657383756).

The spelling of 315142243 in words is "three hundred fifteen million, one hundred forty-two thousand, two hundred forty-three".