1131011303209 has 2 divisors, whose sum is σ = 1131011303210. Its totient is φ = 1131011303208.

The previous prime is 1131011303171. The next prime is 1131011303267. The reversal of 1131011303209 is 9023031101311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1094042781225 + 36968521984 = 1045965^2 + 192272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131011303209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131011301209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565505651604 + 565505651605.

It is an arithmetic number, because the mean of its divisors is an integer number (565505651605).

Almost surely, 2^{1131011303209} is an apocalyptic number.

It is an amenable number.

1131011303209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131011303209 is an equidigital number, since it uses as much as digits as its factorization.

1131011303209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The spelling of 1131011303209 in words is "one trillion, one hundred thirty-one billion, eleven million, three hundred three thousand, two hundred nine".