Base | Representation |
---|---|
bin | 100101010101000111111 |
3 | 2022010221212 |
4 | 10222220333 |
5 | 303120411 |
6 | 42115035 |
7 | 13253162 |
oct | 4525077 |
9 | 2263855 |
10 | 1223231 |
11 | 766039 |
12 | 4aba7b |
13 | 33aa09 |
14 | 23bad9 |
15 | 19268b |
hex | 12aa3f |
1223231 has 2 divisors, whose sum is σ = 1223232. Its totient is φ = 1223230.
The previous prime is 1223207. The next prime is 1223237. The reversal of 1223231 is 1323221.
It is a happy number.
It is a strong prime.
It is an emirp because it is prime and its reverse (1323221) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1223231 - 218 = 961087 is a prime.
It is a super-2 number, since 2×12232312 = 2992588158722, which contains 22 as substring.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1223237) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611615 + 611616.
It is an arithmetic number, because the mean of its divisors is an integer number (611616).
21223231 is an apocalyptic number.
1223231 is a deficient number, since it is larger than the sum of its proper divisors (1).
1223231 is an equidigital number, since it uses as much as digits as its factorization.
1223231 is an evil number, because the sum of its binary digits is even.
The product of its digits is 72, while the sum is 14.
The square root of 1223231 is about 1105.9977395999. The cubic root of 1223231 is about 106.9472182685.
Adding to 1223231 its reverse (1323221), we get a palindrome (2546452).
The spelling of 1223231 in words is "one million, two hundred twenty-three thousand, two hundred thirty-one".
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