1131002209 has 2 divisors, whose sum is σ = 1131002210. Its totient is φ = 1131002208.

The previous prime is 1131002167. The next prime is 1131002221. The reversal of 1131002209 is 9022001311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1125803809 + 5198400 = 33553^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131002209 - 2¹³ = 1130994017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131002309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565501104 + 565501105.

It is an arithmetic number, because the mean of its divisors is an integer number (565501105).

Almost surely, 2^1131002209 is an apocalyptic number.

It is an amenable number.

1131002209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131002209 is an equidigital number, since it uses as much as digits as its factorization.

1131002209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1131002209 is about 33630.3762839490. The cubic root of 1131002209 is about 1041.8882758997. Note that the first 3 decimals are identical.

The spelling of 1131002209 in words is "one billion, one hundred thirty-one million, two thousand, two hundred nine".