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13200203 = 31425813
BaseRepresentation
bin110010010110…
…101101001011
3220211122021102
4302112231023
511334401303
61150532015
7220125362
oct62265513
926748242
1013200203
1174a6565
12450700b
132972393
141a787d9
15125b288
hexc96b4b

13200203 has 4 divisors (see below), whose sum is σ = 13626048. Its totient is φ = 12774360.

The previous prime is 13200199. The next prime is 13200221. The reversal of 13200203 is 30200231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13200203 - 22 = 13200199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13200223) 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 3 ways as a sum of consecutive naturals, for example, 212876 + ... + 212937.

It is an arithmetic number, because the mean of its divisors is an integer number (3406512).

Almost surely, 213200203 is an apocalyptic number.

13200203 is a deficient number, since it is larger than the sum of its proper divisors (425845).

13200203 is an equidigital number, since it uses as much as digits as its factorization.

13200203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425844.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 13200203 is about 3633.2083617651. The cubic root of 13200203 is about 236.3343615931.

Adding to 13200203 its reverse (30200231), we get a palindrome (43400434).

The spelling of 13200203 in words is "thirteen million, two hundred thousand, two hundred three".

Divisors: 1 31 425813 13200203