319128 has 16 divisors (see below), whose sum is σ = 797880. Its totient is φ = 106368.

The previous prime is 319127. The next prime is 319129. The reversal of 319128 is 821913.

It is an interprime number because it is at equal distance from previous prime (319127) and next prime (319129).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 13297 = 319128 / (3 + 1 + 9 + 1 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 319098 and 319107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319127) 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, 6625 + ... + 6672.

2³¹⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

319128 is an abundant number, since it is smaller than the sum of its proper divisors (478752).

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

319128 is a wasteful number, since it uses less digits than its factorization.

319128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13306 (or 13302 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 319128 is about 564.9141527701. The cubic root of 319128 is about 68.3368522215.

The spelling of 319128 in words is "three hundred nineteen thousand, one hundred twenty-eight".