315344123 has 4 divisors (see below), whose sum is σ = 315456240. Its totient is φ = 315232008.

The previous prime is 315344111. The next prime is 315344129. The reversal of 315344123 is 321443513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 315344123 - 2²⁰ = 314295547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315344092 and 315344101.

It is not an unprimeable number, because it can be changed into a prime (315344129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51728 + ... + 57501.

It is an arithmetic number, because the mean of its divisors is an integer number (78864060).

Almost surely, 2^315344123 is an apocalyptic number.

315344123 is a deficient number, since it is larger than the sum of its proper divisors (112117).

315344123 is a wasteful number, since it uses less digits than its factorization.

315344123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112116.

The product of its digits is 4320, while the sum is 26.

The square root of 315344123 is about 17757.9312702803. The cubic root of 315344123 is about 680.6568933380.

Adding to 315344123 its reverse (321443513), we get a palindrome (636787636).

The spelling of 315344123 in words is "three hundred fifteen million, three hundred forty-four thousand, one hundred twenty-three".