206543312 has 40 divisors (see below), whose sum is σ = 423859776. Its totient is φ = 97295616.

The previous prime is 206543303. The next prime is 206543329. The reversal of 206543312 is 213345602.

206543312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20468 + ... + 28844.

Almost surely, 2^206543312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206543312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211929888).

206543312 is an abundant number, since it is smaller than the sum of its proper divisors (217316464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206543312 is a wasteful number, since it uses less digits than its factorization.

206543312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8475 (or 8469 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 206543312 is about 14371.6148014063. The cubic root of 206543312 is about 591.1128207479.

Adding to 206543312 its reverse (213345602), we get a palindrome (419888914).

The spelling of 206543312 in words is "two hundred six million, five hundred forty-three thousand, three hundred twelve".