11211423 has 4 divisors (see below), whose sum is σ = 14948568. Its totient is φ = 7474280.

The previous prime is 11211401. The next prime is 11211437. The reversal of 11211423 is 32411211.

11211423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11211423 - 2⁶ = 11211359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211493) 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, 1868568 + ... + 1868573.

It is an arithmetic number, because the mean of its divisors is an integer number (3737142).

Almost surely, 2^11211423 is an apocalyptic number.

11211423 is a deficient number, since it is larger than the sum of its proper divisors (3737145).

11211423 is an equidigital number, since it uses as much as digits as its factorization.

11211423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737144.

The product of its digits is 48, while the sum is 15.

The square root of 11211423 is about 3348.3463082543. The cubic root of 11211423 is about 223.8138267606.

Adding to 11211423 its reverse (32411211), we get a palindrome (43622634).

The spelling of 11211423 in words is "eleven million, two hundred eleven thousand, four hundred twenty-three".