2123143111 has 4 divisors (see below), whose sum is σ = 2123235400. Its totient is φ = 2123050824.

The previous prime is 2123143027. The next prime is 2123143117. The reversal of 2123143111 is 1113413212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2123143111 - 2⁹ = 2123142599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123143117) 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, 19360 + ... + 67978.

It is an arithmetic number, because the mean of its divisors is an integer number (530808850).

Almost surely, 2^2123143111 is an apocalyptic number.

2123143111 is a deficient number, since it is larger than the sum of its proper divisors (92289).

2123143111 is an equidigital number, since it uses as much as digits as its factorization.

2123143111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92288.

The product of its digits is 144, while the sum is 19.

The square root of 2123143111 is about 46077.5770955896. The cubic root of 2123143111 is about 1285.2662089838.

Adding to 2123143111 its reverse (1113413212), we get a palindrome (3236556323).

The spelling of 2123143111 in words is "two billion, one hundred twenty-three million, one hundred forty-three thousand, one hundred eleven".