319139 has 4 divisors (see below), whose sum is σ = 320424. Its totient is φ = 317856.

The previous prime is 319133. The next prime is 319147. The reversal of 319139 is 931913.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 319139 - 2⁸ = 318883 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 319139.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 810.

It is an arithmetic number, because the mean of its divisors is an integer number (80106).

2³¹⁹¹³⁹ is an apocalyptic number.

319139 is a deficient number, since it is larger than the sum of its proper divisors (1285).

319139 is an equidigital number, since it uses as much as digits as its factorization.

319139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284.

The product of its digits is 729, while the sum is 26.

The square root of 319139 is about 564.9238886788. The cubic root of 319139 is about 68.3376373784.

The spelling of 319139 in words is "three hundred nineteen thousand, one hundred thirty-nine".