211401143 has 2 divisors, whose sum is σ = 211401144. Its totient is φ = 211401142.

The previous prime is 211401109. The next prime is 211401187. The reversal of 211401143 is 341104112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211401143 - 2⁶ = 211401079 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211401943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105700571 + 105700572.

It is an arithmetic number, because the mean of its divisors is an integer number (105700572).

Almost surely, 2^211401143 is an apocalyptic number.

211401143 is a deficient number, since it is larger than the sum of its proper divisors (1).

211401143 is an equidigital number, since it uses as much as digits as its factorization.

211401143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 211401143 is about 14539.6404013304. The cubic root of 211401143 is about 595.7112160035.

Adding to 211401143 its reverse (341104112), we get a palindrome (552505255).

The spelling of 211401143 in words is "two hundred eleven million, four hundred one thousand, one hundred forty-three".