Base | Representation |
---|---|
bin | 11010101011101… |
… | …10001111101111 |
3 | 120121011210102220 |
4 | 31111312033233 |
5 | 424300043043 |
6 | 34113250423 |
7 | 5355350403 |
oct | 1525661757 |
9 | 517153386 |
10 | 223831023 |
11 | 10538a619 |
12 | 62b63a13 |
13 | 374ac3c0 |
14 | 21a27103 |
15 | 149b5483 |
hex | d5763ef |
223831023 has 16 divisors (see below), whose sum is σ = 323936256. Its totient is φ = 136654560.
The previous prime is 223830973. The next prime is 223831081. The reversal of 223831023 is 320138322.
It is not a de Polignac number, because 223831023 - 210 = 223829999 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 223830984 and 223831002.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (223830023) 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, 17643 + ... + 27548.
It is an arithmetic number, because the mean of its divisors is an integer number (20246016).
Almost surely, 2223831023 is an apocalyptic number.
223831023 is a deficient number, since it is larger than the sum of its proper divisors (100105233).
223831023 is a wasteful number, since it uses less digits than its factorization.
223831023 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 45334.
The product of its (nonzero) digits is 1728, while the sum is 24.
The square root of 223831023 is about 14960.9833567182. The cubic root of 223831023 is about 607.1650435498.
Adding to 223831023 its reverse (320138322), we get a palindrome (543969345).
The spelling of 223831023 in words is "two hundred twenty-three million, eight hundred thirty-one thousand, twenty-three".
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