Base | Representation |
---|---|
bin | 111001111100… |
… | …1110010000111 |
3 | 2010011121222011 |
4 | 1303321302013 |
5 | 30234230424 |
6 | 3003115051 |
7 | 516152605 |
oct | 163716207 |
9 | 63147864 |
10 | 30383239 |
11 | 16172417 |
12 | a212a87 |
13 | 63aa563 |
14 | 406c875 |
15 | 2a02694 |
hex | 1cf9c87 |
30383239 has 2 divisors, whose sum is σ = 30383240. Its totient is φ = 30383238.
The previous prime is 30383237. The next prime is 30383251. The reversal of 30383239 is 93238303.
It is a weak prime.
It is an emirp because it is prime and its reverse (93238303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30383239 - 21 = 30383237 is a prime.
It is a super-2 number, since 2×303832392 = 1846282424262242, which contains 22 as substring.
Together with 30383237, it forms a pair of twin primes.
It is a self number, because there is not a number n which added to its sum of digits gives 30383239.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30383237) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15191619 + 15191620.
It is an arithmetic number, because the mean of its divisors is an integer number (15191620).
Almost surely, 230383239 is an apocalyptic number.
30383239 is a deficient number, since it is larger than the sum of its proper divisors (1).
30383239 is an equidigital number, since it uses as much as digits as its factorization.
30383239 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 11664, while the sum is 31.
The square root of 30383239 is about 5512.0993278423. The cubic root of 30383239 is about 312.0407812954.
The spelling of 30383239 in words is "thirty million, three hundred eighty-three thousand, two hundred thirty-nine".
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