Base | Representation |
---|---|
bin | 1100010101110011010… |
… | …1110100100010110111 |
3 | 202021020102010020001012 |
4 | 3011130311310202313 |
5 | 11433144304311411 |
6 | 241221351422435 |
7 | 21213554565356 |
oct | 3053465644267 |
9 | 667212106035 |
10 | 212011010231 |
11 | 81a05762a39 |
12 | 3510a084a1b |
13 | 16cb983a317 |
14 | a39336799d |
15 | 57acb6c18b |
hex | 315cd748b7 |
212011010231 has 2 divisors, whose sum is σ = 212011010232. Its totient is φ = 212011010230.
The previous prime is 212011010219. The next prime is 212011010293. The reversal of 212011010231 is 132010110212.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 212011010231 - 218 = 212010748087 is a prime.
It is a super-2 number, since 2×2120110102312 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (212011010131) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005505115 + 106005505116.
It is an arithmetic number, because the mean of its divisors is an integer number (106005505116).
Almost surely, 2212011010231 is an apocalyptic number.
212011010231 is a deficient number, since it is larger than the sum of its proper divisors (1).
212011010231 is an equidigital number, since it uses as much as digits as its factorization.
212011010231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 24, while the sum is 14.
Adding to 212011010231 its reverse (132010110212), we get a palindrome (344021120443).
The spelling of 212011010231 in words is "two hundred twelve billion, eleven million, ten thousand, two hundred thirty-one".
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