11273111 has 2 divisors, whose sum is σ = 11273112. Its totient is φ = 11273110.

The previous prime is 11273089. The next prime is 11273113. The reversal of 11273111 is 11137211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11273111 is a prime.

Together with 11273113, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11273111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11273113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5636555 + 5636556.

It is an arithmetic number, because the mean of its divisors is an integer number (5636556).

Almost surely, 2^11273111 is an apocalyptic number.

11273111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11273111 is an equidigital number, since it uses as much as digits as its factorization.

11273111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 17.

The square root of 11273111 is about 3357.5453831631. The cubic root of 11273111 is about 224.2235690381.

The spelling of 11273111 in words is "eleven million, two hundred seventy-three thousand, one hundred eleven".