11040431321 has 4 divisors (see below), whose sum is σ = 11040883200. Its totient is φ = 11039979444.

The previous prime is 11040431317. The next prime is 11040431323. The reversal of 11040431321 is 12313404011.

11040431321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11040431321 - 2² = 11040431317 is a prime.

It is a super-2 number, since 2×11040431321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11040431293 and 11040431302.

It is not an unprimeable number, because it can be changed into a prime (11040431323) 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 3 ways as a sum of consecutive naturals, for example, 187061 + ... + 238898.

It is an arithmetic number, because the mean of its divisors is an integer number (2760220800).

Almost surely, 2^11040431321 is an apocalyptic number.

It is an amenable number.

11040431321 is a deficient number, since it is larger than the sum of its proper divisors (451879).

11040431321 is an equidigital number, since it uses as much as digits as its factorization.

11040431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451878.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11040431321 its reverse (12313404011), we get a palindrome (23353835332).

The spelling of 11040431321 in words is "eleven billion, forty million, four hundred thirty-one thousand, three hundred twenty-one".