2111423 has 4 divisors (see below), whose sum is σ = 2203248. Its totient is φ = 2019600.

The previous prime is 2111419. The next prime is 2111443. The reversal of 2111423 is 3241112.

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 2111423 - 2² = 2111419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111398 and 2111407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45878 + ... + 45923.

It is an arithmetic number, because the mean of its divisors is an integer number (550812).

2^2111423 is an apocalyptic number.

2111423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2111423 is a deficient number, since it is larger than the sum of its proper divisors (91825).

2111423 is an equidigital number, since it uses as much as digits as its factorization.

2111423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91824.

The product of its digits is 48, while the sum is 14.

The square root of 2111423 is about 1453.0736388773. The cubic root of 2111423 is about 128.2896881249.

Adding to 2111423 its reverse (3241112), we get a palindrome (5352535).

The spelling of 2111423 in words is "two million, one hundred eleven thousand, four hundred twenty-three".