2003243 has 8 divisors (see below), whose sum is σ = 2196720. Its totient is φ = 1811680.

The previous prime is 2003237. The next prime is 2003257. The reversal of 2003243 is 3423002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2003243 - 2¹⁸ = 1741099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2621 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (274590).

2^2003243 is an apocalyptic number.

2003243 is a deficient number, since it is larger than the sum of its proper divisors (193477).

2003243 is a wasteful number, since it uses less digits than its factorization.

2003243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 2003243 is about 1415.3596716029. The cubic root of 2003243 is about 126.0601669480.

Adding to 2003243 its reverse (3423002), we get a palindrome (5426245).

It can be divided in two parts, 200 and 3243, that added together give a palindrome (3443).

The spelling of 2003243 in words is "two million, three thousand, two hundred forty-three".