Base | Representation |
---|---|
bin | 11001011011101… |
… | …10010011110011 |
3 | 112212110002001001 |
4 | 30231312103303 |
5 | 414104024043 |
6 | 33100422431 |
7 | 5200256416 |
oct | 1455662363 |
9 | 485402031 |
10 | 213345523 |
11 | aa478716 |
12 | 5b547a17 |
13 | 3527a871 |
14 | 20497b7d |
15 | 13ae374d |
hex | cb764f3 |
213345523 has 2 divisors, whose sum is σ = 213345524. Its totient is φ = 213345522.
The previous prime is 213345521. The next prime is 213345571. The reversal of 213345523 is 325543312.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 213345523 - 21 = 213345521 is a prime.
Together with 213345521, it forms a pair of twin primes.
It is a junction number, because it is equal to n+sod(n) for n = 213345491 and 213345500.
It is not a weakly prime, because it can be changed into another prime (213345521) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106672761 + 106672762.
It is an arithmetic number, because the mean of its divisors is an integer number (106672762).
Almost surely, 2213345523 is an apocalyptic number.
213345523 is a deficient number, since it is larger than the sum of its proper divisors (1).
213345523 is an equidigital number, since it uses as much as digits as its factorization.
213345523 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 10800, while the sum is 28.
The square root of 213345523 is about 14606.3521455564. The cubic root of 213345523 is about 597.5320132471.
Adding to 213345523 its reverse (325543312), we get a palindrome (538888835).
The spelling of 213345523 in words is "two hundred thirteen million, three hundred forty-five thousand, five hundred twenty-three".
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