315523 has 6 divisors (see below), whose sum is σ = 341844. Its totient is φ = 291096.

The previous prime is 315521. The next prime is 315527. The reversal of 315523 is 325513.

It is not a de Polignac number, because 315523 - 2¹ = 315521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315523.

It is not an unprimeable number, because it can be changed into a prime (315521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 765 + ... + 1102.

It is an arithmetic number, because the mean of its divisors is an integer number (56974).

2³¹⁵⁵²³ is an apocalyptic number.

315523 is a deficient number, since it is larger than the sum of its proper divisors (26321).

315523 is a wasteful number, since it uses less digits than its factorization.

315523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893 (or 1880 counting only the distinct ones).

The product of its digits is 450, while the sum is 19.

The square root of 315523 is about 561.7143402122. The cubic root of 315523 is about 68.0785568480.

It can be divided in two parts, 315 and 523, that added together give a palindrome (838).

The spelling of 315523 in words is "three hundred fifteen thousand, five hundred twenty-three".