2103443123 has 4 divisors (see below), whose sum is σ = 2148197280. Its totient is φ = 2058688968.

The previous prime is 2103443119. The next prime is 2103443143. The reversal of 2103443123 is 3213443012.

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

It is a cyclic number.

It is not a de Polignac number, because 2103443123 - 2² = 2103443119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103443113) 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, 22377008 + ... + 22377101.

It is an arithmetic number, because the mean of its divisors is an integer number (537049320).

Almost surely, 2^2103443123 is an apocalyptic number.

2103443123 is a deficient number, since it is larger than the sum of its proper divisors (44754157).

2103443123 is an equidigital number, since it uses as much as digits as its factorization.

2103443123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44754156.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2103443123 is about 45863.3091152394. The cubic root of 2103443123 is about 1281.2786545152.

Adding to 2103443123 its reverse (3213443012), we get a palindrome (5316886135).

The spelling of 2103443123 in words is "two billion, one hundred three million, four hundred forty-three thousand, one hundred twenty-three".