11331321 has 8 divisors (see below), whose sum is σ = 15227904. Its totient is φ = 7494480.

The previous prime is 11331319. The next prime is 11331329. The reversal of 11331321 is 12313311.

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

It is not a de Polignac number, because 11331321 - 2¹ = 11331319 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11331321.

It is not an unprimeable number, because it can be changed into a prime (11331329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14490 + ... + 15251.

It is an arithmetic number, because the mean of its divisors is an integer number (1903488).

Almost surely, 2^11331321 is an apocalyptic number.

It is an amenable number.

11331321 is a deficient number, since it is larger than the sum of its proper divisors (3896583).

11331321 is a wasteful number, since it uses less digits than its factorization.

11331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29871.

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

The square root of 11331321 is about 3366.2027568166. The cubic root of 11331321 is about 224.6088413591.

Adding to 11331321 its reverse (12313311), we get a palindrome (23644632).

The spelling of 11331321 in words is "eleven million, three hundred thirty-one thousand, three hundred twenty-one".