1111111343 has 2 divisors, whose sum is σ = 1111111344. Its totient is φ = 1111111342.

The previous prime is 1111111321. The next prime is 1111111363. The reversal of 1111111343 is 3431111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111111343 - 2⁸ = 1111111087 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111111363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555555671 + 555555672.

It is an arithmetic number, because the mean of its divisors is an integer number (555555672).

Almost surely, 2^1111111343 is an apocalyptic number.

1111111343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111111343 is an equidigital number, since it uses as much as digits as its factorization.

1111111343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 17.

The square root of 1111111343 is about 33333.3368116665. The cubic root of 1111111343 is about 1035.7442407046.

Adding to 1111111343 its reverse (3431111111), we get a palindrome (4542222454).

The spelling of 1111111343 in words is "one billion, one hundred eleven million, one hundred eleven thousand, three hundred forty-three".