2011223423 has 16 divisors (see below), whose sum is σ = 2223936000. Its totient is φ = 1803629280.

The previous prime is 2011223413. The next prime is 2011223441. The reversal of 2011223423 is 3243221102.

It is a cyclic number.

It is not a de Polignac number, because 2011223423 - 2¹⁶ = 2011157887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011223395 and 2011223404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011223413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301478 + ... + 308076.

It is an arithmetic number, because the mean of its divisors is an integer number (138996000).

Almost surely, 2^2011223423 is an apocalyptic number.

2011223423 is a deficient number, since it is larger than the sum of its proper divisors (212712577).

2011223423 is a wasteful number, since it uses less digits than its factorization.

2011223423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2011223423 is about 44846.6656843070. The cubic root of 2011223423 is about 1262.2734262294.

Adding to 2011223423 its reverse (3243221102), we get a palindrome (5254444525).

The spelling of 2011223423 in words is "two billion, eleven million, two hundred twenty-three thousand, four hundred twenty-three".