11231112240 has 80 divisors (see below), whose sum is σ = 38684949600. Its totient is φ = 2994962688.

The previous prime is 11231112157. The next prime is 11231112241. The reversal of 11231112240 is 4221113211.

11231112240 is a `hidden beast` number, since 112 + 311 + 1 + 2 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11231112240² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (11231112241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2597635 + ... + 2601954.

It is an arithmetic number, because the mean of its divisors is an integer number (483561870).

Almost surely, 2^11231112240 is an apocalyptic number.

11231112240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231112240 is an abundant number, since it is smaller than the sum of its proper divisors (27453837360).

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

11231112240 is a wasteful number, since it uses less digits than its factorization.

11231112240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199611 (or 5199599 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11231112240 its reverse (4221113211), we get a palindrome (15452225451).

The spelling of 11231112240 in words is "eleven billion, two hundred thirty-one million, one hundred twelve thousand, two hundred forty".