319138 has 4 divisors (see below), whose sum is σ = 478710. Its totient is φ = 159568.

The previous prime is 319133. The next prime is 319147. The reversal of 319138 is 831913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 233289 + 85849 = 483^2 + 293^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79783 + ... + 79786.

2³¹⁹¹³⁸ is an apocalyptic number.

319138 is a deficient number, since it is larger than the sum of its proper divisors (159572).

319138 is a wasteful number, since it uses less digits than its factorization.

319138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159571.

The product of its digits is 648, while the sum is 25.

The square root of 319138 is about 564.9230036031. The cubic root of 319138 is about 68.3375660013.

The spelling of 319138 in words is "three hundred nineteen thousand, one hundred thirty-eight".