12743111 has 2 divisors, whose sum is σ = 12743112. Its totient is φ = 12743110.

The previous prime is 12743089. The next prime is 12743113. The reversal of 12743111 is 11134721.

It is a happy number.

12743111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12743111 is a prime.

Together with 12743113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12743113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6371555 + 6371556.

It is an arithmetic number, because the mean of its divisors is an integer number (6371556).

Almost surely, 2^12743111 is an apocalyptic number.

12743111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12743111 is an equidigital number, since it uses as much as digits as its factorization.

12743111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 20.

The square root of 12743111 is about 3569.7494309825. The cubic root of 12743111 is about 233.5743534485.

Adding to 12743111 its reverse (11134721), we get a palindrome (23877832).

The spelling of 12743111 in words is "twelve million, seven hundred forty-three thousand, one hundred eleven".