Base | Representation |
---|---|
bin | 111001011101… |
… | …1010001101011 |
3 | 2002200121202122 |
4 | 1302323101223 |
5 | 30203032321 |
6 | 2553421455 |
7 | 514035302 |
oct | 162732153 |
9 | 62617678 |
10 | 30127211 |
11 | 16008024 |
12 | a10a88b |
13 | 631ab6a |
14 | 4003439 |
15 | 29a18ab |
hex | 1cbb46b |
30127211 has 2 divisors, whose sum is σ = 30127212. Its totient is φ = 30127210.
The previous prime is 30127199. The next prime is 30127243. The reversal of 30127211 is 11272103.
It is a weak prime.
It is an emirp because it is prime and its reverse (11272103) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30127211 - 218 = 29865067 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 30127211.
It is not a weakly prime, because it can be changed into another prime (30127261) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15063605 + 15063606.
It is an arithmetic number, because the mean of its divisors is an integer number (15063606).
Almost surely, 230127211 is an apocalyptic number.
30127211 is a deficient number, since it is larger than the sum of its proper divisors (1).
30127211 is an equidigital number, since it uses as much as digits as its factorization.
30127211 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 84, while the sum is 17.
The square root of 30127211 is about 5488.8260129102. The cubic root of 30127211 is about 311.1618247780.
Adding to 30127211 its reverse (11272103), we get a palindrome (41399314).
The spelling of 30127211 in words is "thirty million, one hundred twenty-seven thousand, two hundred eleven".
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