2003321423 has 4 divisors (see below), whose sum is σ = 2003432928. Its totient is φ = 2003209920.

The previous prime is 2003321399. The next prime is 2003321443. The reversal of 2003321423 is 3241233002.

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.

It is a cyclic number.

It is not a de Polignac number, because 2003321423 - 2²⁰ = 2002272847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2003321395 and 2003321404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003321443) 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, 21986 + ... + 67007.

It is an arithmetic number, because the mean of its divisors is an integer number (500858232).

Almost surely, 2^2003321423 is an apocalyptic number.

2003321423 is a deficient number, since it is larger than the sum of its proper divisors (111505).

2003321423 is an equidigital number, since it uses as much as digits as its factorization.

2003321423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111504.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2003321423 is about 44758.4787833546. The cubic root of 2003321423 is about 1260.6181192857.

Adding to 2003321423 its reverse (3241233002), we get a palindrome (5244554425).

The spelling of 2003321423 in words is "two billion, three million, three hundred twenty-one thousand, four hundred twenty-three".