2003423443 has 16 divisors (see below), whose sum is σ = 2389567680. Its totient is φ = 1643314176.

The previous prime is 2003423431. The next prime is 2003423447. The reversal of 2003423443 is 3443243002.

It is not a de Polignac number, because 2003423443 - 2¹⁷ = 2003292371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003423447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20730 + ... + 66607.

It is an arithmetic number, because the mean of its divisors is an integer number (149347980).

Almost surely, 2^2003423443 is an apocalyptic number.

2003423443 is a deficient number, since it is larger than the sum of its proper divisors (386144237).

2003423443 is a wasteful number, since it uses less digits than its factorization.

2003423443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87486.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 2003423443 is about 44759.6184411798. The cubic root of 2003423443 is about 1260.6395180947.

Adding to 2003423443 its reverse (3443243002), we get a palindrome (5446666445).

The spelling of 2003423443 in words is "two billion, three million, four hundred twenty-three thousand, four hundred forty-three".