315173 has 4 divisors (see below), whose sum is σ = 316608. Its totient is φ = 313740.

The previous prime is 315127. The next prime is 315179. The reversal of 315173 is 371513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315173 - 2⁶ = 315109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315173.

It is not an unprimeable number, because it can be changed into a prime (315179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311 + ... + 852.

It is an arithmetic number, because the mean of its divisors is an integer number (79152).

2³¹⁵¹⁷³ is an apocalyptic number.

It is an amenable number.

315173 is a deficient number, since it is larger than the sum of its proper divisors (1435).

315173 is a wasteful number, since it uses less digits than its factorization.

315173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its digits is 315, while the sum is 20.

The square root of 315173 is about 561.4027075104. The cubic root of 315173 is about 68.0533750485.

Adding to 315173 its reverse (371513), we get a palindrome (686686).

The spelling of 315173 in words is "three hundred fifteen thousand, one hundred seventy-three".