319686429 has 4 divisors (see below), whose sum is σ = 426248576. Its totient is φ = 213124284.

The previous prime is 319686403. The next prime is 319686449. The reversal of 319686429 is 924686913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 319686429 - 2⁵ = 319686397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319686449) by changing a digit.

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, 53281069 + ... + 53281074.

It is an arithmetic number, because the mean of its divisors is an integer number (106562144).

Almost surely, 2^319686429 is an apocalyptic number.

It is an amenable number.

319686429 is a deficient number, since it is larger than the sum of its proper divisors (106562147).

319686429 is a wasteful number, since it uses less digits than its factorization.

319686429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106562146.

The product of its digits is 559872, while the sum is 48.

The square root of 319686429 is about 17879.7770959260. Note that the first 3 decimals coincide. The cubic root of 319686429 is about 683.7668894602.

The spelling of 319686429 in words is "three hundred nineteen million, six hundred eighty-six thousand, four hundred twenty-nine".