206321275 has 12 divisors (see below), whose sum is σ = 264092224. Its totient is φ = 159732000.

The previous prime is 206321273. The next prime is 206321281. The reversal of 206321275 is 572123602.

It is not a de Polignac number, because 206321275 - 2¹ = 206321273 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (206321273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132336 + ... + 133885.

Almost surely, 2^206321275 is an apocalyptic number.

206321275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

206321275 is a deficient number, since it is larger than the sum of its proper divisors (57770949).

206321275 is a wasteful number, since it uses less digits than its factorization.

206321275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266262 (or 266257 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 206321275 is about 14363.8878789832. The cubic root of 206321275 is about 590.9009265682.

Adding to 206321275 its reverse (572123602), we get a palindrome (778444877).

The spelling of 206321275 in words is "two hundred six million, three hundred twenty-one thousand, two hundred seventy-five".