2143240111 has 2 divisors, whose sum is σ = 2143240112. Its totient is φ = 2143240110.

The previous prime is 2143240097. The next prime is 2143240117. The reversal of 2143240111 is 1110423412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2143240111 - 2¹⁵ = 2143207343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143240117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071620055 + 1071620056.

It is an arithmetic number, because the mean of its divisors is an integer number (1071620056).

Almost surely, 2^2143240111 is an apocalyptic number.

2143240111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143240111 is an equidigital number, since it uses as much as digits as its factorization.

2143240111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2143240111 is about 46295.1413325416. The cubic root of 2143240111 is about 1289.3087880025.

Adding to 2143240111 its reverse (1110423412), we get a palindrome (3253663523).

The spelling of 2143240111 in words is "two billion, one hundred forty-three million, two hundred forty thousand, one hundred eleven".