Base | Representation |
---|---|
bin | 11110111001110101101111 |
3 | 120020120210121 |
4 | 132321311233 |
5 | 4033214411 |
6 | 445345411 |
7 | 125600515 |
oct | 36716557 |
9 | 16216717 |
10 | 8101231 |
11 | 4633636 |
12 | 2868267 |
13 | 18a8538 |
14 | 110c4b5 |
15 | aa0571 |
hex | 7b9d6f |
8101231 has 16 divisors (see below), whose sum is σ = 8981280. Its totient is φ = 7275520.
The previous prime is 8101217. The next prime is 8101241. The reversal of 8101231 is 1321018.
8101231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-8101231 is a prime.
It is a super-2 number, since 2×81012312 = 131259887430722, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8101241) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41025 + ... + 41221.
It is an arithmetic number, because the mean of its divisors is an integer number (561330).
Almost surely, 28101231 is an apocalyptic number.
8101231 is a deficient number, since it is larger than the sum of its proper divisors (880049).
8101231 is a wasteful number, since it uses less digits than its factorization.
8101231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 314.
The product of its (nonzero) digits is 48, while the sum is 16.
The square root of 8101231 is about 2846.2661505910. The cubic root of 8101231 is about 200.8400582372.
Adding to 8101231 its reverse (1321018), we get a palindrome (9422249).
The spelling of 8101231 in words is "eight million, one hundred one thousand, two hundred thirty-one".
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