11137811 has 2 divisors, whose sum is σ = 11137812. Its totient is φ = 11137810.

The previous prime is 11137799. The next prime is 11137813. The reversal of 11137811 is 11873111.

It is a strong prime.

It is an emirp because it is prime and its reverse (11873111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11137811 - 2⁶ = 11137747 is a prime.

Together with 11137813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11137813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5568905 + 5568906.

It is an arithmetic number, because the mean of its divisors is an integer number (5568906).

Almost surely, 2^11137811 is an apocalyptic number.

11137811 is a deficient number, since it is larger than the sum of its proper divisors (1).

11137811 is an equidigital number, since it uses as much as digits as its factorization.

11137811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 23.

The square root of 11137811 is about 3337.3359135694. The cubic root of 11137811 is about 223.3229115703.

The spelling of 11137811 in words is "eleven million, one hundred thirty-seven thousand, eight hundred eleven".