315172 has 48 divisors (see below), whose sum is σ = 705600. Its totient is φ = 120960.

The previous prime is 315127. The next prime is 315179. The reversal of 315172 is 271513.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10854 + ... + 10882.

It is an arithmetic number, because the mean of its divisors is an integer number (14700).

2³¹⁵¹⁷² is an apocalyptic number.

It is an amenable number.

315172 is an abundant number, since it is smaller than the sum of its proper divisors (390428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315172 is a wasteful number, since it uses less digits than its factorization.

315172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 74 counting only the distinct ones).

The product of its digits is 210, while the sum is 19.

The square root of 315172 is about 561.4018168834. The cubic root of 315172 is about 68.0533030738.

Adding to 315172 its reverse (271513), we get a palindrome (586685).

It can be divided in two parts, 3151 and 72, that added together give a palindrome (3223).

The spelling of 315172 in words is "three hundred fifteen thousand, one hundred seventy-two".