Base | Representation |
---|---|
bin | 10101011110001… |
… | …00101101010011 |
3 | 110112220122111122 |
4 | 22233010231103 |
5 | 332102042321 |
6 | 25512232455 |
7 | 4314633326 |
oct | 1257045523 |
9 | 415818448 |
10 | 180112211 |
11 | 92739a74 |
12 | 5039b72b |
13 | 2b412c96 |
14 | 19cc67bd |
15 | 10c2b8ab |
hex | abc4b53 |
180112211 has 2 divisors, whose sum is σ = 180112212. Its totient is φ = 180112210.
The previous prime is 180112187. The next prime is 180112213. The reversal of 180112211 is 112211081.
It is a strong prime.
It is an emirp because it is prime and its reverse (112211081) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 180112211 - 210 = 180111187 is a prime.
Together with 180112213, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 180112211.
It is not a weakly prime, because it can be changed into another prime (180112213) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90056105 + 90056106.
It is an arithmetic number, because the mean of its divisors is an integer number (90056106).
Almost surely, 2180112211 is an apocalyptic number.
180112211 is a deficient number, since it is larger than the sum of its proper divisors (1).
180112211 is an equidigital number, since it uses as much as digits as its factorization.
180112211 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 32, while the sum is 17.
The square root of 180112211 is about 13420.5890705289. The cubic root of 180112211 is about 564.7389202831.
Adding to 180112211 its reverse (112211081), we get a palindrome (292323292).
The spelling of 180112211 in words is "one hundred eighty million, one hundred twelve thousand, two hundred eleven".
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