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203212201 = 19173211293
BaseRepresentation
bin11000001110011…
…00010110101001
3112011101020201211
430013030112221
5404010242301
632055313121
75015163253
oct1407142651
9464336654
10203212201
11a4787375
125807b7a1
133314040a
141cdbacd3
1512c91051
hexc1cc5a9

203212201 has 16 divisors (see below), whose sum is σ = 216901440. Its totient is φ = 189846720.

The previous prime is 203212183. The next prime is 203212211. The reversal of 203212201 is 102212302.

It is a cyclic number.

It is not a de Polignac number, because 203212201 - 27 = 203212073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203212211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693411 + ... + 693703.

It is an arithmetic number, because the mean of its divisors is an integer number (13556340).

Almost surely, 2203212201 is an apocalyptic number.

It is an amenable number.

203212201 is a deficient number, since it is larger than the sum of its proper divisors (13689239).

203212201 is a wasteful number, since it uses less digits than its factorization.

203212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 203212201 is about 14255.2516989354. The cubic root of 203212201 is about 587.9177783516.

Adding to 203212201 its reverse (102212302), we get a palindrome (305424503).

It can be divided in two parts, 20321 and 2201, that added together give a palindrome (22522).

The spelling of 203212201 in words is "two hundred three million, two hundred twelve thousand, two hundred one".

Divisors: 1 19 173 211 293 3287 4009 5567 36503 50689 61823 693557 963091 1174637 10695379 203212201