11321331 has 8 divisors (see below), whose sum is σ = 17251584. Its totient is φ = 6469320.

The previous prime is 11321329. The next prime is 11321347. The reversal of 11321331 is 13312311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11321331 - 2¹ = 11321329 is a prime.

It is a super-2 number, since 2×11321331² = 256345071223122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11321331.

It is not an unprimeable number, because it can be changed into a prime (11321831) 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, 269535 + ... + 269576.

It is an arithmetic number, because the mean of its divisors is an integer number (2156448).

Almost surely, 2^11321331 is an apocalyptic number.

11321331 is a deficient number, since it is larger than the sum of its proper divisors (5930253).

11321331 is an equidigital number, since it uses as much as digits as its factorization.

11321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539121.

The product of its digits is 54, while the sum is 15.

The square root of 11321331 is about 3364.7185617820. The cubic root of 11321331 is about 224.5428148691.

Adding to 11321331 its reverse (13312311), we get a palindrome (24633642).

The spelling of 11321331 in words is "eleven million, three hundred twenty-one thousand, three hundred thirty-one".