1103309209 has 2 divisors, whose sum is σ = 1103309210. Its totient is φ = 1103309208.

The previous prime is 1103309203. The next prime is 1103309213. The reversal of 1103309209 is 9029033011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739568025 + 363741184 = 27195^2 + 19072^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103309209 - 2³ = 1103309201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103309201) 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, 551654604 + 551654605.

It is an arithmetic number, because the mean of its divisors is an integer number (551654605).

Almost surely, 2^1103309209 is an apocalyptic number.

It is an amenable number.

1103309209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103309209 is an equidigital number, since it uses as much as digits as its factorization.

1103309209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 1103309209 is about 33216.0986420741. The cubic root of 1103309209 is about 1033.3142399409.

The spelling of 1103309209 in words is "one billion, one hundred three million, three hundred nine thousand, two hundred nine".