Base | Representation |
---|---|
bin | 11100001101011001… |
… | …100010000001111111 |
3 | 2220011221011110211002 |
4 | 130031121202001333 |
5 | 444013112132441 |
6 | 21525334320515 |
7 | 2121414036023 |
oct | 341531420177 |
9 | 86157143732 |
10 | 30289567871 |
11 | 11933742722 |
12 | 5a53ab913b |
13 | 2b1937c734 |
14 | 1674aa4383 |
15 | bc4276b9b |
hex | 70d66207f |
30289567871 has 2 divisors, whose sum is σ = 30289567872. Its totient is φ = 30289567870.
The previous prime is 30289567837. The next prime is 30289567907. The reversal of 30289567871 is 17876598203.
It is a weak prime.
It is an emirp because it is prime and its reverse (17876598203) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30289567871 - 218 = 30289305727 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30289567771) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15144783935 + 15144783936.
It is an arithmetic number, because the mean of its divisors is an integer number (15144783936).
Almost surely, 230289567871 is an apocalyptic number.
30289567871 is a deficient number, since it is larger than the sum of its proper divisors (1).
30289567871 is an equidigital number, since it uses as much as digits as its factorization.
30289567871 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5080320, while the sum is 56.
The spelling of 30289567871 in words is "thirty billion, two hundred eighty-nine million, five hundred sixty-seven thousand, eight hundred seventy-one".
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