1103309 has 2 divisors, whose sum is σ = 1103310. Its totient is φ = 1103308.

The previous prime is 1103293. The next prime is 1103339. The reversal of 1103309 is 9033011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 162409 = 970^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103309 - 2⁴ = 1103293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551654 + 551655.

It is an arithmetic number, because the mean of its divisors is an integer number (551655).

2^1103309 is an apocalyptic number.

It is an amenable number.

1103309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103309 is an equidigital number, since it uses as much as digits as its factorization.

1103309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1103309 is about 1050.3851674505. The cubic root of 1103309 is about 103.3314174694.

The spelling of 1103309 in words is "one million, one hundred three thousand, three hundred nine".