3111123443 has 2 divisors, whose sum is σ = 3111123444. Its totient is φ = 3111123442.

The previous prime is 3111123397. The next prime is 3111123481. The reversal of 3111123443 is 3443211113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3111123443 - 2⁸ = 3111123187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3161123443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555561721 + 1555561722.

It is an arithmetic number, because the mean of its divisors is an integer number (1555561722).

Almost surely, 2^3111123443 is an apocalyptic number.

3111123443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111123443 is an equidigital number, since it uses as much as digits as its factorization.

3111123443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 3111123443 is about 55777.4456478602. The cubic root of 3111123443 is about 1459.8416421414.

Adding to 3111123443 its reverse (3443211113), we get a palindrome (6554334556).

The spelling of 3111123443 in words is "three billion, one hundred eleven million, one hundred twenty-three thousand, four hundred forty-three".