Base | Representation |
---|---|
bin | 11100010010111101… |
… | …111111101010011101 |
3 | 2220102102222221202121 |
4 | 130102331333222131 |
5 | 444211022400014 |
6 | 21542513222541 |
7 | 2123630226253 |
oct | 342275775235 |
9 | 86372887677 |
10 | 30383012509 |
11 | 11981466aa3 |
12 | 5a7b261a51 |
13 | 2b32839515 |
14 | 168326a5d3 |
15 | bcc584124 |
hex | 712f7fa9d |
30383012509 has 2 divisors, whose sum is σ = 30383012510. Its totient is φ = 30383012508.
The previous prime is 30383012503. The next prime is 30383012531. The reversal of 30383012509 is 90521038303.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 28171944025 + 2211068484 = 167845^2 + 47022^2 .
It is a cyclic number.
It is not a de Polignac number, because 30383012509 - 25 = 30383012477 is a prime.
It is an alternating number because its digits alternate between odd and even.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30383012503) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15191506254 + 15191506255.
It is an arithmetic number, because the mean of its divisors is an integer number (15191506255).
Almost surely, 230383012509 is an apocalyptic number.
It is an amenable number.
30383012509 is a deficient number, since it is larger than the sum of its proper divisors (1).
30383012509 is an equidigital number, since it uses as much as digits as its factorization.
30383012509 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 19440, while the sum is 34.
The spelling of 30383012509 in words is "thirty billion, three hundred eighty-three million, twelve thousand, five hundred nine".
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