Base | Representation |
---|---|
bin | 100100101010011… |
… | …1011000000011101 |
3 | 10011201212201102101 |
4 | 1021110323000131 |
5 | 10004414040331 |
6 | 322023525101 |
7 | 42325465066 |
oct | 11124730035 |
9 | 3151781371 |
10 | 1230221341 |
11 | 581478558 |
12 | 2a3bb9791 |
13 | 167b4612b |
14 | b955956d |
15 | 7300a061 |
hex | 4953b01d |
1230221341 has 2 divisors, whose sum is σ = 1230221342. Its totient is φ = 1230221340.
The previous prime is 1230221339. The next prime is 1230221353. The reversal of 1230221341 is 1431220321.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1111955716 + 118265625 = 33346^2 + 10875^2 .
It is a cyclic number.
It is not a de Polignac number, because 1230221341 - 21 = 1230221339 is a prime.
Together with 1230221339, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1230221141) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615110670 + 615110671.
It is an arithmetic number, because the mean of its divisors is an integer number (615110671).
Almost surely, 21230221341 is an apocalyptic number.
It is an amenable number.
1230221341 is a deficient number, since it is larger than the sum of its proper divisors (1).
1230221341 is an equidigital number, since it uses as much as digits as its factorization.
1230221341 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 1230221341 is about 35074.5112724326. The cubic root of 1230221341 is about 1071.5055351808.
Adding to 1230221341 its reverse (1431220321), we get a palindrome (2661441662).
The spelling of 1230221341 in words is "one billion, two hundred thirty million, two hundred twenty-one thousand, three hundred forty-one".
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