Base | Representation |
---|---|
bin | 1001100100000100000010… |
… | …10110110100010000101111 |
3 | 2202110110221212100211120012 |
4 | 10302002001112310100233 |
5 | 10224030104002421221 |
6 | 112421111132243435 |
7 | 4300251120410255 |
oct | 462020126642057 |
9 | 82413855324505 |
10 | 21030330123311 |
11 | 6778a05105543 |
12 | 243799b01057b |
13 | b971c815b5b2 |
14 | 529c328c45d5 |
15 | 2670a91d565b |
hex | 1320815b442f |
21030330123311 has 4 divisors (see below), whose sum is σ = 21030357451824. Its totient is φ = 21030302794800.
The previous prime is 21030330123293. The next prime is 21030330123331. The reversal of 21030330123311 is 11332103303012.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 21030330123311 - 210 = 21030330122287 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21030330123331) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12475475 + ... + 14060516.
It is an arithmetic number, because the mean of its divisors is an integer number (5257589362956).
Almost surely, 221030330123311 is an apocalyptic number.
21030330123311 is a deficient number, since it is larger than the sum of its proper divisors (27328513).
21030330123311 is an equidigital number, since it uses as much as digits as its factorization.
21030330123311 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27328512.
The product of its (nonzero) digits is 972, while the sum is 23.
Adding to 21030330123311 its reverse (11332103303012), we get a palindrome (32362433426323).
The spelling of 21030330123311 in words is "twenty-one trillion, thirty billion, three hundred thirty million, one hundred twenty-three thousand, three hundred eleven".
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