Base | Representation |
---|---|
bin | 11001010010010… |
… | …10101001110011 |
3 | 112210010201101002 |
4 | 30221022221303 |
5 | 413300240011 |
6 | 33014232215 |
7 | 5153655131 |
oct | 1451125163 |
9 | 483121332 |
10 | 212118131 |
11 | a980a545 |
12 | 5b05566b |
13 | 34c3acb4 |
14 | 20258751 |
15 | 1394ec3b |
hex | ca4aa73 |
212118131 has 2 divisors, whose sum is σ = 212118132. Its totient is φ = 212118130.
The previous prime is 212118119. The next prime is 212118143. The reversal of 212118131 is 131811212.
It is a happy number.
212118131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a balanced prime because it is at equal distance from previous prime (212118119) and next prime (212118143).
It is a cyclic number.
It is not a de Polignac number, because 212118131 - 222 = 207923827 is a prime.
It is a super-2 number, since 2×2121181312 = 89988202997866322, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (212118631) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106059065 + 106059066.
It is an arithmetic number, because the mean of its divisors is an integer number (106059066).
Almost surely, 2212118131 is an apocalyptic number.
212118131 is a deficient number, since it is larger than the sum of its proper divisors (1).
212118131 is an equidigital number, since it uses as much as digits as its factorization.
212118131 is an evil number, because the sum of its binary digits is even.
The product of its digits is 96, while the sum is 20.
The square root of 212118131 is about 14564.2758488021. The cubic root of 212118131 is about 596.3839273305.
Adding to 212118131 its reverse (131811212), we get a palindrome (343929343).
It can be divided in two parts, 2121181 and 31, that added together give a palindrome (2121212).
The spelling of 212118131 in words is "two hundred twelve million, one hundred eighteen thousand, one hundred thirty-one".
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