11103231321 has 96 divisors (see below), whose sum is σ = 20434622208. Its totient is φ = 5652840960.

The previous prime is 11103231311. The next prime is 11103231323. The reversal of 11103231321 is 12313230111.

11103231321 is a `hidden beast` number, since 1 + 110 + 3 + 231 + 321 = 666.

It is not a de Polignac number, because 11103231321 - 2⁶ = 11103231257 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11103231294 and 11103231303.

It is not an unprimeable number, because it can be changed into a prime (11103231323) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3968295 + ... + 3971091.

It is an arithmetic number, because the mean of its divisors is an integer number (212860648).

Almost surely, 2^11103231321 is an apocalyptic number.

It is an amenable number.

11103231321 is a deficient number, since it is larger than the sum of its proper divisors (9331390887).

11103231321 is a wasteful number, since it uses less digits than its factorization.

11103231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11103231321 its reverse (12313230111), we get a palindrome (23416461432).

The spelling of 11103231321 in words is "eleven billion, one hundred three million, two hundred thirty-one thousand, three hundred twenty-one".