Base | Representation |
---|---|
bin | 11010100110111… |
… | …00011111001111 |
3 | 120112222210112021 |
4 | 31103130133033 |
5 | 424114414411 |
6 | 34051551011 |
7 | 5350115311 |
oct | 1523343717 |
9 | 515883467 |
10 | 223201231 |
11 | 104a9a430 |
12 | 628bb467 |
13 | 3731b846 |
14 | 219017b1 |
15 | 148dda71 |
hex | d4dc7cf |
223201231 has 8 divisors (see below), whose sum is σ = 246229200. Its totient is φ = 200629440.
The previous prime is 223201229. The next prime is 223201241. The reversal of 223201231 is 132102322.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 223201231 - 21 = 223201229 is a prime.
It is a super-3 number, since 3×2232012313 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (223201241) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113016 + ... + 114973.
It is an arithmetic number, because the mean of its divisors is an integer number (30778650).
Almost surely, 2223201231 is an apocalyptic number.
223201231 is a deficient number, since it is larger than the sum of its proper divisors (23027969).
223201231 is a wasteful number, since it uses less digits than its factorization.
223201231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 228089.
The product of its (nonzero) digits is 144, while the sum is 16.
The square root of 223201231 is about 14939.9207159878. The cubic root of 223201231 is about 606.5950497448.
Adding to 223201231 its reverse (132102322), we get a palindrome (355303553).
The spelling of 223201231 in words is "two hundred twenty-three million, two hundred one thousand, two hundred thirty-one".
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