Base | Representation |
---|---|
bin | 100100101010011… |
… | …1000110001111111 |
3 | 10011201212020220200 |
4 | 1021110320301333 |
5 | 10004413242343 |
6 | 322023414543 |
7 | 42325426362 |
oct | 11124706177 |
9 | 3151766820 |
10 | 1230212223 |
11 | 581471719 |
12 | 2a3bb4453 |
13 | 167b41c36 |
14 | b95560d9 |
15 | 730074d3 |
hex | 49538c7f |
1230212223 has 24 divisors (see below), whose sum is σ = 1838996016. Its totient is φ = 791856000.
The previous prime is 1230212213. The next prime is 1230212231. The reversal of 1230212223 is 3222120321.
1230212223 is a `hidden beast` number, since 1 + 230 + 212 + 223 = 666.
It is not a de Polignac number, because 1230212223 - 220 = 1229163647 is a prime.
It is a super-2 number, since 2×12302122232 = 3026844227237203458, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1230212196 and 1230212205.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1230212213) 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 23 ways as a sum of consecutive naturals, for example, 29523 + ... + 57723.
It is an arithmetic number, because the mean of its divisors is an integer number (76624834).
Almost surely, 21230212223 is an apocalyptic number.
1230212223 is a deficient number, since it is larger than the sum of its proper divisors (608783793).
1230212223 is a wasteful number, since it uses less digits than its factorization.
1230212223 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28375 (or 28372 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 1230212223 is about 35074.3812917634. The cubic root of 1230212223 is about 1071.5028879575.
Adding to 1230212223 its reverse (3222120321), we get a palindrome (4452332544).
The spelling of 1230212223 in words is "one billion, two hundred thirty million, two hundred twelve thousand, two hundred twenty-three".
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