11311203321 has 48 divisors (see below), whose sum is σ = 17957047680. Its totient is φ = 6804207360.

The previous prime is 11311203307. The next prime is 11311203391. The reversal of 11311203321 is 12330211311.

11311203321 is a `hidden beast` number, since 1 + 1 + 311 + 20 + 332 + 1 = 666.

11311203321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11311203321 - 2¹⁷ = 11311072249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11311203294 and 11311203303.

It is not an unprimeable number, because it can be changed into a prime (11311203391) 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 47 ways as a sum of consecutive naturals, for example, 10125855 + ... + 10126971.

It is an arithmetic number, because the mean of its divisors is an integer number (374105160).

Almost surely, 2^11311203321 is an apocalyptic number.

11311203321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11311203321 is a deficient number, since it is larger than the sum of its proper divisors (6645844359).

11311203321 is a wasteful number, since it uses less digits than its factorization.

11311203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1803 counting only the distinct ones).

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

Adding to 11311203321 its reverse (12330211311), we get a palindrome (23641414632).

The spelling of 11311203321 in words is "eleven billion, three hundred eleven million, two hundred three thousand, three hundred twenty-one".