11131668 has 120 divisors (see below), whose sum is σ = 32199552. Its totient is φ = 3338496.

The previous prime is 11131657. The next prime is 11131669. The reversal of 11131668 is 86613111.

11131668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131669) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 236821 + ... + 236867.

Almost surely, 2^11131668 is an apocalyptic number.

11131668 is a gapful number since it is divisible by the number (18) 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 11131668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16099776).

11131668 is an abundant number, since it is smaller than the sum of its proper divisors (21067884).

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

11131668 is a wasteful number, since it uses less digits than its factorization.

11131668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 112 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 11131668 is about 3336.4154417578. The cubic root of 11131668 is about 223.2818465011.

Adding to 11131668 its reverse (86613111), we get a palindrome (97744779).

The spelling of 11131668 in words is "eleven million, one hundred thirty-one thousand, six hundred sixty-eight".