206143216 has 10 divisors (see below), whose sum is σ = 399402512. Its totient is φ = 103071600.

The previous prime is 206143213. The next prime is 206143219. The reversal of 206143216 is 612341602.

It is an interprime number because it is at equal distance from previous prime (206143213) and next prime (206143219).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206143213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6441960 + ... + 6441991.

Almost surely, 2^206143216 is an apocalyptic number.

It is an amenable number.

206143216 is a deficient number, since it is larger than the sum of its proper divisors (193259296).

206143216 is a wasteful number, since it uses less digits than its factorization.

206143216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12883959 (or 12883953 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 206143216 is about 14357.6883933313. The cubic root of 206143216 is about 590.7308915744.

Adding to 206143216 its reverse (612341602), we get a palindrome (818484818).

The spelling of 206143216 in words is "two hundred six million, one hundred forty-three thousand, two hundred sixteen".