12319943 has 4 divisors (see below), whose sum is σ = 12433080. Its totient is φ = 12206808.

The previous prime is 12319921. The next prime is 12319963. The reversal of 12319943 is 34991321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12319943 - 2²⁰ = 11271367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12319913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56405 + ... + 56622.

It is an arithmetic number, because the mean of its divisors is an integer number (3108270).

Almost surely, 2^12319943 is an apocalyptic number.

12319943 is a deficient number, since it is larger than the sum of its proper divisors (113137).

12319943 is a wasteful number, since it uses less digits than its factorization.

12319943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113136.

The product of its digits is 5832, while the sum is 32.

The square root of 12319943 is about 3509.9776352564. The cubic root of 12319943 is about 230.9597138693.

The spelling of 12319943 in words is "twelve million, three hundred nineteen thousand, nine hundred forty-three".