11343509 has 2 divisors, whose sum is σ = 11343510. Its totient is φ = 11343508.

The previous prime is 11343503. The next prime is 11343533. The reversal of 11343509 is 90534311.

11343509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6708100 + 4635409 = 2590^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 11343509 - 2⁸ = 11343253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11343503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5671754 + 5671755.

It is an arithmetic number, because the mean of its divisors is an integer number (5671755).

Almost surely, 2^11343509 is an apocalyptic number.

It is an amenable number.

11343509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11343509 is an equidigital number, since it uses as much as digits as its factorization.

11343509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 11343509 is about 3368.0126187412. The cubic root of 11343509 is about 224.6893424659.

The spelling of 11343509 in words is "eleven million, three hundred forty-three thousand, five hundred nine".