11321389 has 2 divisors, whose sum is σ = 11321390. Its totient is φ = 11321388.

The previous prime is 11321377. The next prime is 11321399. The reversal of 11321389 is 98312311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 1304164 = 3165^2 + 1142^2 .

It is an emirp because it is prime and its reverse (98312311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11321389 - 2¹⁵ = 11288621 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660694 + 5660695.

It is an arithmetic number, because the mean of its divisors is an integer number (5660695).

Almost surely, 2^11321389 is an apocalyptic number.

It is an amenable number.

11321389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321389 is an equidigital number, since it uses as much as digits as its factorization.

11321389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 11321389 is about 3364.7271806196. The cubic root of 11321389 is about 224.5431983182.

The spelling of 11321389 in words is "eleven million, three hundred twenty-one thousand, three hundred eighty-nine".