Base | Representation |
---|---|
bin | 11011011100100… |
… | …11011101011111 |
3 | 121001020111211210 |
4 | 31232103131133 |
5 | 432420222033 |
6 | 34502515503 |
7 | 5464011615 |
oct | 1556233537 |
9 | 531214753 |
10 | 230242143 |
11 | 108a6936a |
12 | 65135b93 |
13 | 38915571 |
14 | 228156b5 |
15 | 1532ed63 |
hex | db9375f |
230242143 has 16 divisors (see below), whose sum is σ = 314012160. Its totient is φ = 149993856.
The previous prime is 230242141. The next prime is 230242147. The reversal of 230242143 is 341242032.
It is not a de Polignac number, because 230242143 - 21 = 230242141 is a prime.
It is a super-2 number, since 2×2302421432 = 106022888826464898, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230242141) 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 in 15 ways as a sum of consecutive naturals, for example, 176871 + ... + 178167.
It is an arithmetic number, because the mean of its divisors is an integer number (19625760).
Almost surely, 2230242143 is an apocalyptic number.
230242143 is a deficient number, since it is larger than the sum of its proper divisors (83770017).
230242143 is a wasteful number, since it uses less digits than its factorization.
230242143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2606.
The product of its (nonzero) digits is 1152, while the sum is 21.
The square root of 230242143 is about 15173.7320063325. The cubic root of 230242143 is about 612.9075054690.
Adding to 230242143 its reverse (341242032), we get a palindrome (571484175).
The spelling of 230242143 in words is "two hundred thirty million, two hundred forty-two thousand, one hundred forty-three".
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