Base | Representation |
---|---|
bin | 11011011010110… |
… | …01100111101111 |
3 | 121000210110212021 |
4 | 31231121213233 |
5 | 432340131411 |
6 | 34453451011 |
7 | 5462004121 |
oct | 1555314757 |
9 | 530713767 |
10 | 230005231 |
11 | 108917375 |
12 | 65040a67 |
13 | 38861791 |
14 | 22793211 |
15 | 152d4a71 |
hex | db599ef |
230005231 has 2 divisors, whose sum is σ = 230005232. Its totient is φ = 230005230.
The previous prime is 230005229. The next prime is 230005247. The reversal of 230005231 is 132500032.
It is an a-pointer prime, because the next prime (230005247) can be obtained adding 230005231 to its sum of digits (16).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 230005231 - 21 = 230005229 is a prime.
It is a super-2 number, since 2×2300052312 = 105804812574726722, which contains 22 as substring.
Together with 230005229, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (230005211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115002615 + 115002616.
It is an arithmetic number, because the mean of its divisors is an integer number (115002616).
Almost surely, 2230005231 is an apocalyptic number.
230005231 is a deficient number, since it is larger than the sum of its proper divisors (1).
230005231 is an equidigital number, since it uses as much as digits as its factorization.
230005231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 180, while the sum is 16.
The square root of 230005231 is about 15165.9233480853. The cubic root of 230005231 is about 612.6972124077.
Adding to 230005231 its reverse (132500032), we get a palindrome (362505263).
The spelling of 230005231 in words is "two hundred thirty million, five thousand, two hundred thirty-one".
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