11443321 has 2 divisors, whose sum is σ = 11443322. Its totient is φ = 11443320.

The previous prime is 11443319. The next prime is 11443343. The reversal of 11443321 is 12334411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9369721 + 2073600 = 3061^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 11443321 - 2¹ = 11443319 is a prime.

Together with 11443319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11443721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721660 + 5721661.

It is an arithmetic number, because the mean of its divisors is an integer number (5721661).

Almost surely, 2^11443321 is an apocalyptic number.

It is an amenable number.

11443321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11443321 is an equidigital number, since it uses as much as digits as its factorization.

11443321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 11443321 is about 3382.7978065501. The cubic root of 11443321 is about 225.3464358611.

Adding to 11443321 its reverse (12334411), we get a palindrome (23777732).

It can be divided in two parts, 1144 and 3321, that added together give a triangular number (4465 = T₉₄).

The spelling of 11443321 in words is "eleven million, four hundred forty-three thousand, three hundred twenty-one".