206220312 has 48 divisors (see below), whose sum is σ = 559845000. Its totient is φ = 68576256.

The previous prime is 206220299. The next prime is 206220347. The reversal of 206220312 is 213022602.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29139 + ... + 35517.

Almost surely, 2^206220312 is an apocalyptic number.

It is an amenable number.

206220312 is an abundant number, since it is smaller than the sum of its proper divisors (353624688).

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

206220312 is a wasteful number, since it uses less digits than its factorization.

206220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840 (or 6833 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 206220312 is about 14360.3729756577. The cubic root of 206220312 is about 590.8045253540.

Adding to 206220312 its reverse (213022602), we get a palindrome (419242914).

The spelling of 206220312 in words is "two hundred six million, two hundred twenty thousand, three hundred twelve".