Base | Representation |
---|---|
bin | 110001101101… |
… | …001101010111 |
3 | 220112000010011 |
4 | 301231031113 |
5 | 11313431411 |
6 | 1143141051 |
7 | 215520004 |
oct | 61551527 |
9 | 26460104 |
10 | 13030231 |
11 | 739a895 |
12 | 4444787 |
13 | 2912bc6 |
14 | 1a328ab |
15 | 1225c21 |
hex | c6d357 |
13030231 has 2 divisors, whose sum is σ = 13030232. Its totient is φ = 13030230.
The previous prime is 13030229. The next prime is 13030267. The reversal of 13030231 is 13203031.
It is a weak prime.
It is an emirp because it is prime and its reverse (13203031) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13030231 - 21 = 13030229 is a prime.
It is a super-2 number, since 2×130302312 = 339573839826722, which contains 22 as substring.
Together with 13030229, 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 (13030201) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515115 + 6515116.
It is an arithmetic number, because the mean of its divisors is an integer number (6515116).
Almost surely, 213030231 is an apocalyptic number.
13030231 is a deficient number, since it is larger than the sum of its proper divisors (1).
13030231 is an equidigital number, since it uses as much as digits as its factorization.
13030231 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 54, while the sum is 13.
The square root of 13030231 is about 3609.7411264521. The cubic root of 13030231 is about 235.3155922839.
Adding to 13030231 its reverse (13203031), we get a palindrome (26233262).
The spelling of 13030231 in words is "thirteen million, thirty thousand, two hundred thirty-one".
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