208268143 has 2 divisors, whose sum is σ = 208268144. Its totient is φ = 208268142.

The previous prime is 208268141. The next prime is 208268219. The reversal of 208268143 is 341862802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 208268143 - 2¹ = 208268141 is a prime.

Together with 208268141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 208268099 and 208268108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208268141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104134071 + 104134072.

It is an arithmetic number, because the mean of its divisors is an integer number (104134072).

Almost surely, 2^208268143 is an apocalyptic number.

208268143 is a deficient number, since it is larger than the sum of its proper divisors (1).

208268143 is an equidigital number, since it uses as much as digits as its factorization.

208268143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 208268143 is about 14431.4982936631. The cubic root of 208268143 is about 592.7537109484.

It can be divided in two parts, 2082 and 68143, that added together give a square (70225 = 265²).

The spelling of 208268143 in words is "two hundred eight million, two hundred sixty-eight thousand, one hundred forty-three".