Base | Representation |
---|---|
bin | 1000001111101001… |
… | …1001000010110111 |
3 | 12201020101020222001 |
4 | 2003322121002313 |
5 | 14013024402411 |
6 | 1003334520131 |
7 | 105562141255 |
oct | 20372310267 |
9 | 5636336861 |
10 | 2213122231 |
11 | a36282541 |
12 | 519206047 |
13 | 2936773a8 |
14 | 16dcd55d5 |
15 | ce45edc1 |
hex | 83e990b7 |
2213122231 has 16 divisors (see below), whose sum is σ = 2293951968. Its totient is φ = 2135004480.
The previous prime is 2213122207. The next prime is 2213122267. The reversal of 2213122231 is 1322213122.
2213122231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 2213122231 - 27 = 2213122103 is a prime.
It is a super-2 number, since 2×22131222312 = 9795820018692834722, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 2213122199 and 2213122208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2213132231) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11234025 + ... + 11234221.
It is an arithmetic number, because the mean of its divisors is an integer number (143371998).
Almost surely, 22213122231 is an apocalyptic number.
2213122231 is a deficient number, since it is larger than the sum of its proper divisors (80829737).
2213122231 is an frugal number, since it uses more digits than its factorization.
2213122231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 483 (or 401 counting only the distinct ones).
The product of its digits is 288, while the sum is 19.
The square root of 2213122231 is about 47043.8330814996. The cubic root of 2213122231 is about 1303.1721803627.
Adding to 2213122231 its reverse (1322213122), we get a palindrome (3535335353).
The spelling of 2213122231 in words is "two billion, two hundred thirteen million, one hundred twenty-two thousand, two hundred thirty-one".
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