11320321 has 4 divisors (see below), whose sum is σ = 11332144. Its totient is φ = 11308500.

The previous prime is 11320313. The next prime is 11320339. The reversal of 11320321 is 12302311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11320321 - 2³ = 11320313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11323321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4335 + ... + 6436.

It is an arithmetic number, because the mean of its divisors is an integer number (2833036).

Almost surely, 2^11320321 is an apocalyptic number.

It is an amenable number.

11320321 is a deficient number, since it is larger than the sum of its proper divisors (11823).

11320321 is a wasteful number, since it uses less digits than its factorization.

11320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11822.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 11320321 is about 3364.5684715874. The cubic root of 11320321 is about 224.5361373566.

Adding to 11320321 its reverse (12302311), we get a palindrome (23622632).

The spelling of 11320321 in words is "eleven million, three hundred twenty thousand, three hundred twenty-one".