11131042040 has 32 divisors (see below), whose sum is σ = 25397595360.
Its totient is φ = 4389705600.
The previous prime is 11131041983. The next prime is 11131042123. The reversal of 11131042040 is 4024013111.
It is a happy number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1956851 + ... + 1962530.
It is an arithmetic number, because the mean of its divisors is an integer number (793674855).
Almost surely, 211131042040 is an apocalyptic number.
11131042040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
11131042040 is an abundant number, since it is smaller than the sum of its proper divisors (14266553320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11131042040 is a wasteful number, since it uses less digits than its factorization.
11131042040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3919463 (or 3919459 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 17.
Adding to 11131042040 its reverse (4024013111), we get a palindrome (15155055151).
The spelling of 11131042040 in words is "eleven billion, one hundred thirty-one million, forty-two thousand, forty".