2011103443 has 2 divisors, whose sum is σ = 2011103444. Its totient is φ = 2011103442.

The previous prime is 2011103357. The next prime is 2011103447. The reversal of 2011103443 is 3443011102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011103443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2011103443.

It is not a weakly prime, because it can be changed into another prime (2011103447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005551721 + 1005551722.

It is an arithmetic number, because the mean of its divisors is an integer number (1005551722).

Almost surely, 2^2011103443 is an apocalyptic number.

2011103443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011103443 is an equidigital number, since it uses as much as digits as its factorization.

2011103443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2011103443 is about 44845.3279952327. The cubic root of 2011103443 is about 1262.2483253255.

Adding to 2011103443 its reverse (3443011102), we get a palindrome (5454114545).

The spelling of 2011103443 in words is "two billion, eleven million, one hundred three thousand, four hundred forty-three".