1131130111109 has 2 divisors, whose sum is σ = 1131130111110. Its totient is φ = 1131130111108.

The previous prime is 1131130111031. The next prime is 1131130111183. The reversal of 1131130111109 is 9011110311311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1126788619009 + 4341492100 = 1061503^2 + 65890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131130111109 - 2²⁰ = 1131129062533 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 (1131130111609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565565055554 + 565565055555.

It is an arithmetic number, because the mean of its divisors is an integer number (565565055555).

Almost surely, 2^{1131130111109} is an apocalyptic number.

It is an amenable number.

1131130111109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131130111109 is an equidigital number, since it uses as much as digits as its factorization.

1131130111109 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 23.

The spelling of 1131130111109 in words is "one trillion, one hundred thirty-one billion, one hundred thirty million, one hundred eleven thousand, one hundred nine".