Base | Representation |
---|---|
bin | 11100001001111010… |
… | …111000000111010101 |
3 | 2220000212100002102222 |
4 | 130021322320013111 |
5 | 443403141401323 |
6 | 21515451312125 |
7 | 2120104650644 |
oct | 341172700725 |
9 | 86025302388 |
10 | 30231200213 |
11 | 119037a7195 |
12 | 5a3844b645 |
13 | 2b0a254766 |
14 | 166b02d35b |
15 | bbe0979c8 |
hex | 709eb81d5 |
30231200213 has 2 divisors, whose sum is σ = 30231200214. Its totient is φ = 30231200212.
The previous prime is 30231200203. The next prime is 30231200261. The reversal of 30231200213 is 31200213203.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 28568436484 + 1662763729 = 169022^2 + 40777^2 .
It is a cyclic number.
It is not a de Polignac number, because 30231200213 - 26 = 30231200149 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 30231200191 and 30231200200.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30231200203) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115600106 + 15115600107.
It is an arithmetic number, because the mean of its divisors is an integer number (15115600107).
Almost surely, 230231200213 is an apocalyptic number.
It is an amenable number.
30231200213 is a deficient number, since it is larger than the sum of its proper divisors (1).
30231200213 is an equidigital number, since it uses as much as digits as its factorization.
30231200213 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 216, while the sum is 17.
Adding to 30231200213 its reverse (31200213203), we get a palindrome (61431413416).
The spelling of 30231200213 in words is "thirty billion, two hundred thirty-one million, two hundred thousand, two hundred thirteen".
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