319686434 has 4 divisors (see below), whose sum is σ = 479529654. Its totient is φ = 159843216.

The previous prime is 319686403. The next prime is 319686449. The reversal of 319686434 is 434686913.

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., 271425625 + 48260809 = 16475^2 + 6947^2 .

It is a Curzon number.

It is an unprimeable number.

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, 79921607 + ... + 79921610.

Almost surely, 2^319686434 is an apocalyptic number.

319686434 is a deficient number, since it is larger than the sum of its proper divisors (159843220).

319686434 is a wasteful number, since it uses less digits than its factorization.

319686434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159843219.

The product of its digits is 373248, while the sum is 44.

The square root of 319686434 is about 17879.7772357488. Note that the first 3 decimals coincide. The cubic root of 319686434 is about 683.7668930250.

The spelling of 319686434 in words is "three hundred nineteen million, six hundred eighty-six thousand, four hundred thirty-four".