11143309 has 2 divisors, whose sum is σ = 11143310. Its totient is φ = 11143308.

The previous prime is 11143283. The next prime is 11143333. The reversal of 11143309 is 90334111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9320809 + 1822500 = 3053^2 + 1350^2 .

It is a cyclic number.

It is not a de Polignac number, because 11143309 - 2²¹ = 9046157 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11143309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11143399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571654 + 5571655.

It is an arithmetic number, because the mean of its divisors is an integer number (5571655).

Almost surely, 2^11143309 is an apocalyptic number.

It is an amenable number.

11143309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11143309 is an equidigital number, since it uses as much as digits as its factorization.

11143309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 11143309 is about 3338.1595228509. The cubic root of 11143309 is about 223.3596521049.

The spelling of 11143309 in words is "eleven million, one hundred forty-three thousand, three hundred nine".