Base | Representation |
---|---|
bin | 110010000011… |
… | …001011010011 |
3 | 220200120112202 |
4 | 302003023103 |
5 | 11324321321 |
6 | 1145113415 |
7 | 216343226 |
oct | 62031323 |
9 | 26616482 |
10 | 13120211 |
11 | 7451455 |
12 | 448886b |
13 | 2944b50 |
14 | 1a575bd |
15 | 124270b |
hex | c832d3 |
13120211 has 4 divisors (see below), whose sum is σ = 14129472. Its totient is φ = 12110952.
The previous prime is 13120201. The next prime is 13120213. The reversal of 13120211 is 11202131.
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 13120211 - 218 = 12858067 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 13120192 and 13120201.
It is not an unprimeable number, because it can be changed into a prime (13120213) by changing a digit.
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 3 ways as a sum of consecutive naturals, for example, 504611 + ... + 504636.
It is an arithmetic number, because the mean of its divisors is an integer number (3532368).
Almost surely, 213120211 is an apocalyptic number.
13120211 is a deficient number, since it is larger than the sum of its proper divisors (1009261).
13120211 is a wasteful number, since it uses less digits than its factorization.
13120211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1009260.
The product of its (nonzero) digits is 12, while the sum is 11.
The square root of 13120211 is about 3622.1831814529. The cubic root of 13120211 is about 235.8560059556.
Adding to 13120211 its reverse (11202131), we get a palindrome (24322342).
It can be divided in two parts, 13120 and 211, that added together give a palindrome (13331).
The spelling of 13120211 in words is "thirteen million, one hundred twenty thousand, two hundred eleven".
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