11261143 has 2 divisors, whose sum is σ = 11261144. Its totient is φ = 11261142.

The previous prime is 11261137. The next prime is 11261171. The reversal of 11261143 is 34116211.

It is a weak prime.

It is an emirp because it is prime and its reverse (34116211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11261143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11261143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11261113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5630571 + 5630572.

It is an arithmetic number, because the mean of its divisors is an integer number (5630572).

Almost surely, 2^11261143 is an apocalyptic number.

11261143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11261143 is an equidigital number, since it uses as much as digits as its factorization.

11261143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

The square root of 11261143 is about 3355.7626554928. The cubic root of 11261143 is about 224.1441926094.

Adding to 11261143 its reverse (34116211), we get a palindrome (45377354).

The spelling of 11261143 in words is "eleven million, two hundred sixty-one thousand, one hundred forty-three".