11243300309 has 2 divisors, whose sum is σ = 11243300310. Its totient is φ = 11243300308.

The previous prime is 11243300279. The next prime is 11243300323. The reversal of 11243300309 is 90300334211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8864787409 + 2378512900 = 94153^2 + 48770^2 .

It is a cyclic number.

It is not a de Polignac number, because 11243300309 - 2¹² = 11243296213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11243300209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5621650154 + 5621650155.

It is an arithmetic number, because the mean of its divisors is an integer number (5621650155).

Almost surely, 2^11243300309 is an apocalyptic number.

It is an amenable number.

11243300309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11243300309 is an equidigital number, since it uses as much as digits as its factorization.

11243300309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 11243300309 in words is "eleven billion, two hundred forty-three million, three hundred thousand, three hundred nine".