206321201 has 8 divisors (see below), whose sum is σ = 216938304. Its totient is φ = 195841360.

The previous prime is 206321191. The next prime is 206321239. The reversal of 206321201 is 102123602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206321201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 206321201.

It is not an unprimeable number, because it can be changed into a prime (206321261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31226 + ... + 37251.

It is an arithmetic number, because the mean of its divisors is an integer number (27117288).

Almost surely, 2^206321201 is an apocalyptic number.

It is an amenable number.

206321201 is a deficient number, since it is larger than the sum of its proper divisors (10617103).

206321201 is a wasteful number, since it uses less digits than its factorization.

206321201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68631.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 206321201 is about 14363.8853030787. The cubic root of 206321201 is about 590.9008559232.

Adding to 206321201 its reverse (102123602), we get a palindrome (308444803).

The spelling of 206321201 in words is "two hundred six million, three hundred twenty-one thousand, two hundred one".