Base | Representation |
---|---|
bin | 100011110110111… |
… | …1101011000001101 |
3 | 10002212002102120021 |
4 | 1013231331120031 |
5 | 4431011331341 |
6 | 315221222141 |
7 | 41550200554 |
oct | 10755753015 |
9 | 3085072507 |
10 | 1203230221 |
11 | 568212746 |
12 | 296b61951 |
13 | 16238585b |
14 | b5b30d9b |
15 | 709779d1 |
hex | 47b7d60d |
1203230221 has 8 divisors (see below), whose sum is σ = 1252018944. Its totient is φ = 1155407760.
The previous prime is 1203230219. The next prime is 1203230291. The reversal of 1203230221 is 1220323021.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 1203230221 - 21 = 1203230219 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1203230195 and 1203230204.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1203230201) 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, 239025 + ... + 244006.
It is an arithmetic number, because the mean of its divisors is an integer number (156502368).
Almost surely, 21203230221 is an apocalyptic number.
It is an amenable number.
1203230221 is a deficient number, since it is larger than the sum of its proper divisors (48788723).
1203230221 is an equidigital number, since it uses as much as digits as its factorization.
1203230221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 483131.
The product of its (nonzero) digits is 144, while the sum is 16.
The square root of 1203230221 is about 34687.6090412701. The cubic root of 1203230221 is about 1063.6112210127.
Adding to 1203230221 its reverse (1220323021), we get a palindrome (2423553242).
The spelling of 1203230221 in words is "one billion, two hundred three million, two hundred thirty thousand, two hundred twenty-one".
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