2123423304343 has 4 divisors (see below), whose sum is σ = 2316461786568. Its totient is φ = 1930384822120.

The previous prime is 2123423304311. The next prime is 2123423304367. The reversal of 2123423304343 is 3434033243212.

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 2123423304343 - 2⁵ = 2123423304311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123423304299 and 2123423304308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123423301343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96519241096 + ... + 96519241117.

It is an arithmetic number, because the mean of its divisors is an integer number (579115446642).

Almost surely, 2^{2123423304343} is an apocalyptic number.

2123423304343 is a deficient number, since it is larger than the sum of its proper divisors (193038482225).

2123423304343 is a wasteful number, since it uses less digits than its factorization.

2123423304343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193038482224.

The product of its (nonzero) digits is 124416, while the sum is 34.

Adding to 2123423304343 its reverse (3434033243212), we get a palindrome (5557456547555).

The spelling of 2123423304343 in words is "two trillion, one hundred twenty-three billion, four hundred twenty-three million, three hundred four thousand, three hundred forty-three".