11231136 has 120 divisors (see below), whose sum is σ = 37810080. Its totient is φ = 3203712.

The previous prime is 11231119. The next prime is 11231141. The reversal of 11231136 is 63113211.

It is a super-2 number, since 2×11231136² = 252276831700992, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 17835 + ... + 18453.

It is an arithmetic number, because the mean of its divisors is an integer number (315084).

Almost surely, 2^11231136 is an apocalyptic number.

11231136 is a gapful number since it is divisible by the number (16) 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 11231136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18905040).

11231136 is an abundant number, since it is smaller than the sum of its proper divisors (26578944).

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

11231136 is an equidigital number, since it uses as much as digits as its factorization.

11231136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 631 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 11231136 is about 3351.2887073483. The cubic root of 11231136 is about 223.9449269369.

Adding to 11231136 its reverse (63113211), we get a palindrome (74344347).

The spelling of 11231136 in words is "eleven million, two hundred thirty-one thousand, one hundred thirty-six".