1131936811 has 2 divisors, whose sum is σ = 1131936812. Its totient is φ = 1131936810.

The previous prime is 1131936797. The next prime is 1131936829. The reversal of 1131936811 is 1186391311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131936811 - 2⁵ = 1131936779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131931811) 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, 565968405 + 565968406.

It is an arithmetic number, because the mean of its divisors is an integer number (565968406).

Almost surely, 2^1131936811 is an apocalyptic number.

1131936811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131936811 is an equidigital number, since it uses as much as digits as its factorization.

1131936811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 34.

The square root of 1131936811 is about 33644.2686203757. The cubic root of 1131936811 is about 1042.1751844965.

The spelling of 1131936811 in words is "one billion, one hundred thirty-one million, nine hundred thirty-six thousand, eight hundred eleven".