11321003311 has 4 divisors (see below), whose sum is σ = 11321262000. Its totient is φ = 11320744624.

The previous prime is 11321003297. The next prime is 11321003327. The reversal of 11321003311 is 11330012311.

11321003311 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 an emirpimes, since its reverse is a distinct semiprime: 11330012311 = 193 ⋅58704727.

It is a cyclic number.

It is not a de Polignac number, because 11321003311 - 2³³ = 2731068719 is a prime.

It is a super-4 number, since 4×11321003311⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321003381) 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, 45646 + ... + 157243.

It is an arithmetic number, because the mean of its divisors is an integer number (2830315500).

Almost surely, 2^11321003311 is an apocalyptic number.

11321003311 is a deficient number, since it is larger than the sum of its proper divisors (258689).

11321003311 is an equidigital number, since it uses as much as digits as its factorization.

11321003311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258688.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11321003311 its reverse (11330012311), we get a palindrome (22651015622).

The spelling of 11321003311 in words is "eleven billion, three hundred twenty-one million, three thousand, three hundred eleven".