Base | Representation |
---|---|
bin | 111001010001… |
… | …0100111110111 |
3 | 2002111111020122 |
4 | 1302202213313 |
5 | 30141314411 |
6 | 2551322155 |
7 | 513135014 |
oct | 162424767 |
9 | 62444218 |
10 | 30026231 |
11 | 15a49174 |
12 | a08035b |
13 | 62b3c01 |
14 | 3db870b |
15 | 29819db |
hex | 1ca29f7 |
30026231 has 2 divisors, whose sum is σ = 30026232. Its totient is φ = 30026230.
The previous prime is 30026219. The next prime is 30026237. The reversal of 30026231 is 13262003.
It is a strong prime.
It is an emirp because it is prime and its reverse (13262003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30026231 - 26 = 30026167 is a prime.
It is a super-2 number, since 2×300262312 = 1803149096130722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30026237) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15013115 + 15013116.
It is an arithmetic number, because the mean of its divisors is an integer number (15013116).
Almost surely, 230026231 is an apocalyptic number.
30026231 is a deficient number, since it is larger than the sum of its proper divisors (1).
30026231 is an equidigital number, since it uses as much as digits as its factorization.
30026231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 216, while the sum is 17.
The square root of 30026231 is about 5479.6196035856. The cubic root of 30026231 is about 310.8137862310.
Adding to 30026231 its reverse (13262003), we get a palindrome (43288234).
The spelling of 30026231 in words is "thirty million, twenty-six thousand, two hundred thirty-one".
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