Base | Representation |
---|---|
bin | 1100010101110011110… |
… | …1111010001000110011 |
3 | 202021020120002221012221 |
4 | 3011130331322020303 |
5 | 11433200330132131 |
6 | 241221505101511 |
7 | 21213611605324 |
oct | 3053475721063 |
9 | 667216087187 |
10 | 212013130291 |
11 | 81a06980856 |
12 | 3510a927897 |
13 | 16cba1002b1 |
14 | a39375a44b |
15 | 57ace3a411 |
hex | 315cf7a233 |
212013130291 has 2 divisors, whose sum is σ = 212013130292. Its totient is φ = 212013130290.
The previous prime is 212013130283. The next prime is 212013130327. The reversal of 212013130291 is 192031310212.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 212013130291 - 23 = 212013130283 is a prime.
It is not a weakly prime, because it can be changed into another prime (212013130261) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006565145 + 106006565146.
It is an arithmetic number, because the mean of its divisors is an integer number (106006565146).
Almost surely, 2212013130291 is an apocalyptic number.
212013130291 is a deficient number, since it is larger than the sum of its proper divisors (1).
212013130291 is an equidigital number, since it uses as much as digits as its factorization.
212013130291 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 648, while the sum is 25.
The spelling of 212013130291 in words is "two hundred twelve billion, thirteen million, one hundred thirty thousand, two hundred ninety-one".
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