11321404240 has 40 divisors (see below), whose sum is σ = 26355857760. Its totient is φ = 4522782336.

The previous prime is 11321404231. The next prime is 11321404243. The reversal of 11321404240 is 4240412311.

It is a happy number.

11321404240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×11321404240³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321404243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26950 + ... + 152869.

It is an arithmetic number, because the mean of its divisors is an integer number (658896444).

Almost surely, 2^11321404240 is an apocalyptic number.

11321404240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321404240 is an abundant number, since it is smaller than the sum of its proper divisors (15034453520).

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

11321404240 is a wasteful number, since it uses less digits than its factorization.

11321404240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180619 (or 180613 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11321404240 its reverse (4240412311), we get a palindrome (15561816551).

The spelling of 11321404240 in words is "eleven billion, three hundred twenty-one million, four hundred four thousand, two hundred forty".