Base | Representation |
---|---|
bin | 11011011010111… |
… | …11101101010001 |
3 | 121000211202001121 |
4 | 31231133231101 |
5 | 432341431121 |
6 | 34454202241 |
7 | 5462136604 |
oct | 1555375521 |
9 | 530752047 |
10 | 230030161 |
11 | 108934079 |
12 | 65053381 |
13 | 3886cc2a |
14 | 2279c33b |
15 | 152dc141 |
hex | db5fb51 |
230030161 has 2 divisors, whose sum is σ = 230030162. Its totient is φ = 230030160.
The previous prime is 230030159. The next prime is 230030191. The reversal of 230030161 is 161030032.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 160807761 + 69222400 = 12681^2 + 8320^2 .
It is a cyclic number.
It is not a de Polignac number, because 230030161 - 21 = 230030159 is a prime.
Together with 230030159, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (230030191) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115015080 + 115015081.
It is an arithmetic number, because the mean of its divisors is an integer number (115015081).
Almost surely, 2230030161 is an apocalyptic number.
It is an amenable number.
230030161 is a deficient number, since it is larger than the sum of its proper divisors (1).
230030161 is an equidigital number, since it uses as much as digits as its factorization.
230030161 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 108, while the sum is 16.
The square root of 230030161 is about 15166.7452342287. The cubic root of 230030161 is about 612.7193481211.
Adding to 230030161 its reverse (161030032), we get a palindrome (391060193).
The spelling of 230030161 in words is "two hundred thirty million, thirty thousand, one hundred sixty-one".
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