319129 has 2 divisors, whose sum is σ = 319130. Its totient is φ = 319128.

The previous prime is 319127. The next prime is 319133. The reversal of 319129 is 921913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198025 + 121104 = 445^2 + 348^2 .

It is an emirp because it is prime and its reverse (921913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 319129 - 2¹ = 319127 is a prime.

Together with 319127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (319127) 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 as a sum of consecutive naturals, namely, 159564 + 159565.

It is an arithmetic number, because the mean of its divisors is an integer number (159565).

2³¹⁹¹²⁹ is an apocalyptic number.

It is an amenable number.

319129 is a deficient number, since it is larger than the sum of its proper divisors (1).

319129 is an equidigital number, since it uses as much as digits as its factorization.

319129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 25.

The square root of 319129 is about 564.9150378597. The cubic root of 319129 is about 68.3369236001.

The spelling of 319129 in words is "three hundred nineteen thousand, one hundred twenty-nine".