13319923 has 4 divisors (see below), whose sum is σ = 13480488. Its totient is φ = 13159360.

The previous prime is 13319897. The next prime is 13319939. The reversal of 13319923 is 32991331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13319923 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13319623) 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, 80158 + ... + 80323.

It is an arithmetic number, because the mean of its divisors is an integer number (3370122).

Almost surely, 2^13319923 is an apocalyptic number.

13319923 is a deficient number, since it is larger than the sum of its proper divisors (160565).

13319923 is an equidigital number, since it uses as much as digits as its factorization.

13319923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160564.

The product of its digits is 4374, while the sum is 31.

The square root of 13319923 is about 3649.6469692287. The cubic root of 13319923 is about 237.0466950905.

The spelling of 13319923 in words is "thirteen million, three hundred nineteen thousand, nine hundred twenty-three".