11380309 has 2 divisors, whose sum is σ = 11380310. Its totient is φ = 11380308.

The previous prime is 11380301. The next prime is 11380321. The reversal of 11380309 is 90308311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 23409 = 3370^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 11380309 - 2³ = 11380301 is a prime.

It is a super-2 number, since 2×11380309² = 259022865870962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11380301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5690154 + 5690155.

It is an arithmetic number, because the mean of its divisors is an integer number (5690155).

Almost surely, 2^11380309 is an apocalyptic number.

It is an amenable number.

11380309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11380309 is an equidigital number, since it uses as much as digits as its factorization.

11380309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 11380309 is about 3373.4713575188. The cubic root of 11380309 is about 224.9320552045.

The spelling of 11380309 in words is "eleven million, three hundred eighty thousand, three hundred nine".