2143103123 has 4 divisors (see below), whose sum is σ = 2449260720. Its totient is φ = 1836945528.

The previous prime is 2143103117. The next prime is 2143103153. The reversal of 2143103123 is 3213013412.

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 2143103123 - 2⁶ = 2143103059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143103095 and 2143103104.

It is not an unprimeable number, because it can be changed into a prime (2143103153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153078788 + ... + 153078801.

It is an arithmetic number, because the mean of its divisors is an integer number (612315180).

Almost surely, 2^2143103123 is an apocalyptic number.

2143103123 is a deficient number, since it is larger than the sum of its proper divisors (306157597).

2143103123 is an equidigital number, since it uses as much as digits as its factorization.

2143103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306157596.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2143103123 is about 46293.6618015901. The cubic root of 2143103123 is about 1289.2813181304.

Adding to 2143103123 its reverse (3213013412), we get a palindrome (5356116535).

The spelling of 2143103123 in words is "two billion, one hundred forty-three million, one hundred three thousand, one hundred twenty-three".