Base | Representation |
---|---|
bin | 1100010101110011111… |
… | …0001110001001111111 |
3 | 202021020120021002200211 |
4 | 3011130332032021333 |
5 | 11433200340243122 |
6 | 241221510533251 |
7 | 21213612366352 |
oct | 3053476161177 |
9 | 667216232624 |
10 | 212013212287 |
11 | 81a06a27418 |
12 | 3510a967227 |
13 | 16cba12b706 |
14 | a39377c299 |
15 | 57ace54877 |
hex | 315cf8e27f |
212013212287 has 2 divisors, whose sum is σ = 212013212288. Its totient is φ = 212013212286.
The previous prime is 212013212263. The next prime is 212013212321. The reversal of 212013212287 is 782212310212.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-212013212287 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (212013212087) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006606143 + 106006606144.
It is an arithmetic number, because the mean of its divisors is an integer number (106006606144).
Almost surely, 2212013212287 is an apocalyptic number.
212013212287 is a deficient number, since it is larger than the sum of its proper divisors (1).
212013212287 is an equidigital number, since it uses as much as digits as its factorization.
212013212287 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5376, while the sum is 31.
Adding to 212013212287 its reverse (782212310212), we get a palindrome (994225522499).
The spelling of 212013212287 in words is "two hundred twelve billion, thirteen million, two hundred twelve thousand, two hundred eighty-seven".
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