2111344243 has 2 divisors, whose sum is σ = 2111344244. Its totient is φ = 2111344242.

The previous prime is 2111344231. The next prime is 2111344297. The reversal of 2111344243 is 3424431112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111344243 - 2⁵ = 2111344211 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111344643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055672121 + 1055672122.

It is an arithmetic number, because the mean of its divisors is an integer number (1055672122).

Almost surely, 2^2111344243 is an apocalyptic number.

2111344243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111344243 is an equidigital number, since it uses as much as digits as its factorization.

2111344243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 2111344243 is about 45949.3660783258. The cubic root of 2111344243 is about 1282.8809301790.

Adding to 2111344243 its reverse (3424431112), we get a palindrome (5535775355).

It can be divided in two parts, 21113 and 44243, that added together give a palindrome (65356).

The spelling of 2111344243 in words is "two billion, one hundred eleven million, three hundred forty-four thousand, two hundred forty-three".