Base | Representation |
---|---|
bin | 11110111010110100001111 |
3 | 120020210021202 |
4 | 132322310033 |
5 | 4033331411 |
6 | 445420115 |
7 | 125615261 |
oct | 36726417 |
9 | 16223252 |
10 | 8105231 |
11 | 4636642 |
12 | 286a63b |
13 | 18aa2c4 |
14 | 110db31 |
15 | aa183b |
hex | 7bad0f |
8105231 has 2 divisors, whose sum is σ = 8105232. Its totient is φ = 8105230.
The previous prime is 8105221. The next prime is 8105261. The reversal of 8105231 is 1325018.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 8105231 - 210 = 8104207 is a prime.
It is a super-2 number, since 2×81052312 = 131389539126722, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (8105221) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052615 + 4052616.
It is an arithmetic number, because the mean of its divisors is an integer number (4052616).
Almost surely, 28105231 is an apocalyptic number.
8105231 is a deficient number, since it is larger than the sum of its proper divisors (1).
8105231 is an equidigital number, since it uses as much as digits as its factorization.
8105231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 240, while the sum is 20.
The square root of 8105231 is about 2846.9687388519. The cubic root of 8105231 is about 200.8731078667.
The spelling of 8105231 in words is "eight million, one hundred five thousand, two hundred thirty-one".
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