2123044403 has 4 divisors (see below), whose sum is σ = 2123178648. Its totient is φ = 2122910160.

The previous prime is 2123044351. The next prime is 2123044421. The reversal of 2123044403 is 3044403212.

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-2123044403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123044603) 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, 39653 + ... + 76278.

It is an arithmetic number, because the mean of its divisors is an integer number (530794662).

Almost surely, 2^2123044403 is an apocalyptic number.

2123044403 is a deficient number, since it is larger than the sum of its proper divisors (134245).

2123044403 is a wasteful number, since it uses less digits than its factorization.

2123044403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134244.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2123044403 is about 46076.5059764735. The cubic root of 2123044403 is about 1285.2462907123.

Adding to 2123044403 its reverse (3044403212), we get a palindrome (5167447615).

The spelling of 2123044403 in words is "two billion, one hundred twenty-three million, forty-four thousand, four hundred three".