11188423 has 4 divisors (see below), whose sum is σ = 11200288. Its totient is φ = 11176560.

The previous prime is 11188399. The next prime is 11188433. The reversal of 11188423 is 32488111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32488111 = 797 ⋅40763.

It is a cyclic number.

It is not a de Polignac number, because 11188423 - 2⁵ = 11188391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11188391 and 11188400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11188433) 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, 4383 + ... + 6448.

It is an arithmetic number, because the mean of its divisors is an integer number (2800072).

Almost surely, 2^11188423 is an apocalyptic number.

11188423 is a deficient number, since it is larger than the sum of its proper divisors (11865).

11188423 is a wasteful number, since it uses less digits than its factorization.

11188423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11864.

The product of its digits is 1536, while the sum is 28.

The square root of 11188423 is about 3344.9100137373. The cubic root of 11188423 is about 223.6606721854.

It can be divided in two parts, 11188 and 423, that added together give a palindrome (11611).

The spelling of 11188423 in words is "eleven million, one hundred eighty-eight thousand, four hundred twenty-three".