Base | Representation |
---|---|
bin | 10110011010000110… |
… | …01110101101110101 |
3 | 1011001101202221022011 |
4 | 23031003032231311 |
5 | 144114202014311 |
6 | 5305423004221 |
7 | 604055152456 |
oct | 131503165565 |
9 | 34041687264 |
10 | 12030110581 |
11 | 5113758155 |
12 | 23b8a39671 |
13 | 1199477c38 |
14 | 821a1912d |
15 | 4a621c321 |
hex | 2cd0ceb75 |
12030110581 has 2 divisors, whose sum is σ = 12030110582. Its totient is φ = 12030110580.
The previous prime is 12030110557. The next prime is 12030110593. The reversal of 12030110581 is 18501103021.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 12003174481 + 26936100 = 109559^2 + 5190^2 .
It is an emirp because it is prime and its reverse (18501103021) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12030110581 - 225 = 11996556149 is a prime.
It is a super-2 number, since 2×120301105812 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12030110681) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015055290 + 6015055291.
It is an arithmetic number, because the mean of its divisors is an integer number (6015055291).
Almost surely, 212030110581 is an apocalyptic number.
It is an amenable number.
12030110581 is a deficient number, since it is larger than the sum of its proper divisors (1).
12030110581 is an equidigital number, since it uses as much as digits as its factorization.
12030110581 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 22.
The spelling of 12030110581 in words is "twelve billion, thirty million, one hundred ten thousand, five hundred eighty-one".
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