11131011040 has 24 divisors (see below), whose sum is σ = 26297013960. Its totient is φ = 4452404352.

The previous prime is 11131011029. The next prime is 11131011041. The reversal of 11131011040 is 4011013111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11131011040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131011041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34784250 + ... + 34784569.

It is an arithmetic number, because the mean of its divisors is an integer number (1095708915).

Almost surely, 2^11131011040 is an apocalyptic number.

11131011040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131011040 is an abundant number, since it is smaller than the sum of its proper divisors (15166002920).

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

11131011040 is an equidigital number, since it uses as much as digits as its factorization.

11131011040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69568834 (or 69568826 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11131011040 its reverse (4011013111), we get a palindrome (15142024151).

The spelling of 11131011040 in words is "eleven billion, one hundred thirty-one million, eleven thousand, forty".