2143211243 has 2 divisors, whose sum is σ = 2143211244. Its totient is φ = 2143211242.

The previous prime is 2143211227. The next prime is 2143211261. The reversal of 2143211243 is 3421123412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2143211243 - 2⁴ = 2143211227 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143211263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071605621 + 1071605622.

It is an arithmetic number, because the mean of its divisors is an integer number (1071605622).

Almost surely, 2^2143211243 is an apocalyptic number.

2143211243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143211243 is an equidigital number, since it uses as much as digits as its factorization.

2143211243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 2143211243 is about 46294.8295493136. The cubic root of 2143211243 is about 1289.3029992696.

Adding to 2143211243 its reverse (3421123412), we get a palindrome (5564334655).

The spelling of 2143211243 in words is "two billion, one hundred forty-three million, two hundred eleven thousand, two hundred forty-three".