216875143 has 2 divisors, whose sum is σ = 216875144. Its totient is φ = 216875142.

The previous prime is 216875129. The next prime is 216875149. The reversal of 216875143 is 341578612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216875143 - 2¹⁷ = 216744071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216875149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108437571 + 108437572.

It is an arithmetic number, because the mean of its divisors is an integer number (108437572).

Almost surely, 2^216875143 is an apocalyptic number.

216875143 is a deficient number, since it is larger than the sum of its proper divisors (1).

216875143 is an equidigital number, since it uses as much as digits as its factorization.

216875143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 216875143 is about 14726.6813301572. The cubic root of 216875143 is about 600.8092256916.

It can be divided in two parts, 2 and 16875143, that added together give a triangular number (16875145 = T₅₈₀₉).

The spelling of 216875143 in words is "two hundred sixteen million, eight hundred seventy-five thousand, one hundred forty-three".