11111131040 has 48 divisors (see below), whose sum is σ = 26285847840. Its totient is φ = 4438391040.

The previous prime is 11111131037. The next prime is 11111131063. The reversal of 11111131040 is 4013111111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71255 + ... + 165225.

It is an arithmetic number, because the mean of its divisors is an integer number (547621830).

Almost surely, 2^11111131040 is an apocalyptic number.

11111131040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111131040 is an abundant number, since it is smaller than the sum of its proper divisors (15174716800).

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

11111131040 is an equidigital number, since it uses as much as digits as its factorization.

11111131040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94725 (or 94717 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11111131040 its reverse (4013111111), we get a palindrome (15124242151).

The spelling of 11111131040 in words is "eleven billion, one hundred eleven million, one hundred thirty-one thousand, forty".