Base | Representation |
---|---|
bin | 11000100100101… |
… | …11011101100001 |
3 | 112100220001200021 |
4 | 30102113131201 |
5 | 410233010111 |
6 | 32242153441 |
7 | 5052112663 |
oct | 1422273541 |
9 | 470801607 |
10 | 206141281 |
11 | a63a7aa5 |
12 | 59052881 |
13 | 339276b8 |
14 | 1d540533 |
15 | 1316dd71 |
hex | c497761 |
206141281 has 2 divisors, whose sum is σ = 206141282. Its totient is φ = 206141280.
The previous prime is 206141263. The next prime is 206141291. The reversal of 206141281 is 182141602.
206141281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 177422400 + 28718881 = 13320^2 + 5359^2 .
It is a cyclic number.
It is not a de Polignac number, because 206141281 - 213 = 206133089 is a prime.
It is a super-2 number, since 2×2061412812 = 84988455464641922, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (206141231) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103070640 + 103070641.
It is an arithmetic number, because the mean of its divisors is an integer number (103070641).
Almost surely, 2206141281 is an apocalyptic number.
It is an amenable number.
206141281 is a deficient number, since it is larger than the sum of its proper divisors (1).
206141281 is an equidigital number, since it uses as much as digits as its factorization.
206141281 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 768, while the sum is 25.
The square root of 206141281 is about 14357.6210076739. The cubic root of 206141281 is about 590.7290432350.
Adding to 206141281 its reverse (182141602), we get a palindrome (388282883).
The spelling of 206141281 in words is "two hundred six million, one hundred forty-one thousand, two hundred eighty-one".
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