23111144 has 96 divisors (see below), whose sum is σ = 55404000. Its totient is φ = 8975232.

The previous prime is 23111119. The next prime is 23111149. The reversal of 23111144 is 44111132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23111149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215939 + ... + 216045.

It is an arithmetic number, because the mean of its divisors is an integer number (577125).

Almost surely, 2^23111144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23111144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27702000).

23111144 is an abundant number, since it is smaller than the sum of its proper divisors (32292856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23111144 is a wasteful number, since it uses less digits than its factorization.

23111144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 164 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 23111144 is about 4807.4051212686. The cubic root of 23111144 is about 284.8440472314.

Adding to 23111144 its reverse (44111132), we get a palindrome (67222276).

The spelling of 23111144 in words is "twenty-three million, one hundred eleven thousand, one hundred forty-four".