Base | Representation |
---|---|
bin | 101011111010… |
… | …0111000100111 |
3 | 1121022200211000 |
4 | 1113310320213 |
5 | 21343220033 |
6 | 2141244343 |
7 | 366456603 |
oct | 127647047 |
9 | 47280730 |
10 | 23023143 |
11 | 11aa56a0 |
12 | 78636b3 |
13 | 4a01480 |
14 | 30b4503 |
15 | 204ba13 |
hex | 15f4e27 |
23023143 has 64 divisors (see below), whose sum is σ = 41126400. Its totient is φ = 12545280.
The previous prime is 23023127. The next prime is 23023183. The reversal of 23023143 is 34132032.
It is not a de Polignac number, because 23023143 - 24 = 23023127 is a prime.
It is a super-2 number, since 2×230231432 = 1060130227196898, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23023123) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 258643 + ... + 258731.
It is an arithmetic number, because the mean of its divisors is an integer number (642600).
Almost surely, 223023143 is an apocalyptic number.
23023143 is a deficient number, since it is larger than the sum of its proper divisors (18103257).
23023143 is a wasteful number, since it uses less digits than its factorization.
23023143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 189 (or 183 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 18.
The square root of 23023143 is about 4798.2437412037. The cubic root of 23023143 is about 284.4820509575.
Adding to 23023143 its reverse (34132032), we get a palindrome (57155175).
Subtracting 23023143 from its reverse (34132032), we obtain a square (11108889 = 33332).
It can be divided in two parts, 2302 and 3143, that added together give a palindrome (5445).
The spelling of 23023143 in words is "twenty-three million, twenty-three thousand, one hundred forty-three".
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