23111400 has 96 divisors (see below), whose sum is σ = 77182560. Its totient is φ = 5687040.

The previous prime is 23111393. The next prime is 23111401. The reversal of 23111400 is 411132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (23111401) 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, 6319 + ... + 9281.

It is an arithmetic number, because the mean of its divisors is an integer number (803985).

Almost surely, 2^23111400 is an apocalyptic number.

23111400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23111400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38591280).

23111400 is an abundant number, since it is smaller than the sum of its proper divisors (54071160).

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

23111400 is a wasteful number, since it uses less digits than its factorization.

23111400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 23111400 is about 4807.4317467854. The cubic root of 23111400 is about 284.8450989579.

Adding to 23111400 its reverse (411132), we get a palindrome (23522532).

The spelling of 23111400 in words is "twenty-three million, one hundred eleven thousand, four hundred".