Base | Representation |
---|---|
bin | 111010111001… |
… | …1000111011011 |
3 | 2011002212200211 |
4 | 1311303013123 |
5 | 30401131334 |
6 | 3021511551 |
7 | 523322536 |
oct | 165630733 |
9 | 64085624 |
10 | 30880219 |
11 | 16481847 |
12 | a4125b7 |
13 | 6522826 |
14 | 415ba1d |
15 | 2a9ea64 |
hex | 1d731db |
30880219 has 2 divisors, whose sum is σ = 30880220. Its totient is φ = 30880218.
The previous prime is 30880217. The next prime is 30880253. The reversal of 30880219 is 91208803.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 30880219 - 21 = 30880217 is a prime.
It is a super-2 number, since 2×308802192 = 1907175850975922, which contains 22 as substring.
Together with 30880217, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (30880217) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15440109 + 15440110.
It is an arithmetic number, because the mean of its divisors is an integer number (15440110).
Almost surely, 230880219 is an apocalyptic number.
30880219 is a deficient number, since it is larger than the sum of its proper divisors (1).
30880219 is an equidigital number, since it uses as much as digits as its factorization.
30880219 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3456, while the sum is 31.
The square root of 30880219 is about 5556.9973007012. The cubic root of 30880219 is about 313.7329433117.
The spelling of 30880219 in words is "thirty million, eight hundred eighty thousand, two hundred nineteen".
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