1140311209 has 2 divisors, whose sum is σ = 1140311210. Its totient is φ = 1140311208.

The previous prime is 1140311203. The next prime is 1140311267. The reversal of 1140311209 is 9021130411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777294400 + 363016809 = 27880^2 + 19053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140311209 - 2¹⁵ = 1140278441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1140311209.

It is not a weakly prime, because it can be changed into another prime (1140311203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570155604 + 570155605.

It is an arithmetic number, because the mean of its divisors is an integer number (570155605).

Almost surely, 2^1140311209 is an apocalyptic number.

It is an amenable number.

1140311209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140311209 is an equidigital number, since it uses as much as digits as its factorization.

1140311209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1140311209 is about 33768.4943253323. The cubic root of 1140311209 is about 1044.7389774109.

The spelling of 1140311209 in words is "one billion, one hundred forty million, three hundred eleven thousand, two hundred nine".