Base | Representation |
---|---|
bin | 11011111101111101… |
… | …000000001111101101 |
3 | 2212111212112222011002 |
4 | 123331331000033231 |
5 | 443000242244323 |
6 | 21443520210045 |
7 | 2112116311406 |
oct | 337575001755 |
9 | 85455488132 |
10 | 30030431213 |
11 | 118104394a2 |
12 | 59a1169925 |
13 | 2aa778b433 |
14 | 164c4ca9ad |
15 | bab63a828 |
hex | 6fdf403ed |
30030431213 has 2 divisors, whose sum is σ = 30030431214. Its totient is φ = 30030431212.
The previous prime is 30030431191. The next prime is 30030431227. The reversal of 30030431213 is 31213403003.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 27424022404 + 2606408809 = 165602^2 + 51053^2 .
It is an emirp because it is prime and its reverse (31213403003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30030431213 - 28 = 30030430957 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30030431293) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015215606 + 15015215607.
It is an arithmetic number, because the mean of its divisors is an integer number (15015215607).
Almost surely, 230030431213 is an apocalyptic number.
It is an amenable number.
30030431213 is a deficient number, since it is larger than the sum of its proper divisors (1).
30030431213 is an equidigital number, since it uses as much as digits as its factorization.
30030431213 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 648, while the sum is 20.
Adding to 30030431213 its reverse (31213403003), we get a palindrome (61243834216).
The spelling of 30030431213 in words is "thirty billion, thirty million, four hundred thirty-one thousand, two hundred thirteen".
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