208541143 has 2 divisors, whose sum is σ = 208541144. Its totient is φ = 208541142.

The previous prime is 208541077. The next prime is 208541147. The reversal of 208541143 is 341145802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208541143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208541147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104270571 + 104270572.

It is an arithmetic number, because the mean of its divisors is an integer number (104270572).

Almost surely, 2^208541143 is an apocalyptic number.

208541143 is a deficient number, since it is larger than the sum of its proper divisors (1).

208541143 is an equidigital number, since it uses as much as digits as its factorization.

208541143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 208541143 is about 14440.9536734940. The cubic root of 208541143 is about 593.0125937302.

Adding to 208541143 its reverse (341145802), we get a palindrome (549686945).

The spelling of 208541143 in words is "two hundred eight million, five hundred forty-one thousand, one hundred forty-three".