315388 has 12 divisors (see below), whose sum is σ = 567112. Its totient is φ = 153360.

The previous prime is 315377. The next prime is 315389. The reversal of 315388 is 883513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315389) by changing a digit.

315388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918 + ... + 1213.

2³¹⁵³⁸⁸ is an apocalyptic number.

It is an amenable number.

315388 is a deficient number, since it is larger than the sum of its proper divisors (251724).

315388 is a wasteful number, since it uses less digits than its factorization.

315388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2170 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 315388 is about 561.5941595138. The cubic root of 315388 is about 68.0688460754.

It can be divided in two parts, 315 and 388, that added together give a triangular number (703 = T₃₇).

The spelling of 315388 in words is "three hundred fifteen thousand, three hundred eighty-eight".