11231118 has 48 divisors (see below), whose sum is σ = 26058240. Its totient is φ = 3495744.

The previous prime is 11231111. The next prime is 11231119. The reversal of 11231118 is 81113211.

It is a happy number.

It is a super-3 number, since 3×11231118³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 11231118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88371 + ... + 88497.

It is an arithmetic number, because the mean of its divisors is an integer number (542880).

Almost surely, 2^11231118 is an apocalyptic number.

11231118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13029120).

11231118 is an abundant number, since it is smaller than the sum of its proper divisors (14827122).

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

11231118 is a wasteful number, since it uses less digits than its factorization.

11231118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 149 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 11231118 is about 3351.2860218131. The cubic root of 11231118 is about 223.9448072990.

Adding to 11231118 its reverse (81113211), we get a palindrome (92344329).

The spelling of 11231118 in words is "eleven million, two hundred thirty-one thousand, one hundred eighteen".