206356143 has 16 divisors (see below), whose sum is σ = 314896640. Its totient is φ = 117749376.

The previous prime is 206356127. The next prime is 206356219. The reversal of 206356143 is 341653602.

It is not a de Polignac number, because 206356143 - 2⁴ = 206356127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206356143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206356103) 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 in 15 ways as a sum of consecutive naturals, for example, 8871 + ... + 22167.

It is an arithmetic number, because the mean of its divisors is an integer number (19681040).

Almost surely, 2^206356143 is an apocalyptic number.

206356143 is a deficient number, since it is larger than the sum of its proper divisors (108540497).

206356143 is a wasteful number, since it uses less digits than its factorization.

206356143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14046.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 206356143 is about 14365.1015659479. The cubic root of 206356143 is about 590.9342118300.

The spelling of 206356143 in words is "two hundred six million, three hundred fifty-six thousand, one hundred forty-three".