2123143423 has 4 divisors (see below), whose sum is σ = 2123254728. Its totient is φ = 2123032120.

The previous prime is 2123143397. The next prime is 2123143427. The reversal of 2123143423 is 3243413212.

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 2123143423 - 2¹⁷ = 2123012351 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 (2123143427) 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, 18988 + ... + 67873.

It is an arithmetic number, because the mean of its divisors is an integer number (530813682).

Almost surely, 2^2123143423 is an apocalyptic number.

2123143423 is a deficient number, since it is larger than the sum of its proper divisors (111305).

2123143423 is an equidigital number, since it uses as much as digits as its factorization.

2123143423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111304.

The product of its digits is 3456, while the sum is 25.

The square root of 2123143423 is about 46077.5804811841. The cubic root of 2123143423 is about 1285.2662719413.

Adding to 2123143423 its reverse (3243413212), we get a palindrome (5366556635).

The spelling of 2123143423 in words is "two billion, one hundred twenty-three million, one hundred forty-three thousand, four hundred twenty-three".