319403923 has 4 divisors (see below), whose sum is σ = 319445208. Its totient is φ = 319362640.

The previous prime is 319403911. The next prime is 319403947. The reversal of 319403923 is 329304913.

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, and also an emirpimes, since its reverse is a distinct semiprime: 329304913 = 7 ⋅47043559.

It is a cyclic number.

It is not a de Polignac number, because 319403923 - 2⁵ = 319403891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319403423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5173 + ... + 25798.

It is an arithmetic number, because the mean of its divisors is an integer number (79861302).

Almost surely, 2^319403923 is an apocalyptic number.

319403923 is a deficient number, since it is larger than the sum of its proper divisors (41285).

319403923 is a wasteful number, since it uses less digits than its factorization.

319403923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41284.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 319403923 is about 17871.8751954013. The cubic root of 319403923 is about 683.5654158077.

The spelling of 319403923 in words is "three hundred nineteen million, four hundred three thousand, nine hundred twenty-three".