11109623 has 12 divisors (see below), whose sum is σ = 13604760. Its totient is φ = 9020592.

The previous prime is 11109617. The next prime is 11109629. The reversal of 11109623 is 32690111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11109617) and next prime (11109629).

It is not a de Polignac number, because 11109623 - 2⁶ = 11109559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109629) 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 11 ways as a sum of consecutive naturals, for example, 5036 + ... + 6897.

It is an arithmetic number, because the mean of its divisors is an integer number (1133730).

Almost surely, 2^11109623 is an apocalyptic number.

11109623 is a deficient number, since it is larger than the sum of its proper divisors (2495137).

11109623 is a wasteful number, since it uses less digits than its factorization.

11109623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11966 (or 11959 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 11109623 is about 3333.1101091923. The cubic root of 11109623 is about 223.1343543432.

Adding to 11109623 its reverse (32690111), we get a palindrome (43799734).

The spelling of 11109623 in words is "eleven million, one hundred nine thousand, six hundred twenty-three".