Base | Representation |
---|---|
bin | 11011111101010110… |
… | …001010101001001111 |
3 | 2212111011101201102012 |
4 | 123331112022221033 |
5 | 442440141001231 |
6 | 21442514051435 |
7 | 2111633626211 |
oct | 337526125117 |
9 | 85434351365 |
10 | 30020250191 |
11 | 11805715328 |
12 | 5999879b7b |
13 | 2aa5635369 |
14 | 164adda5b1 |
15 | baa7c8e2b |
hex | 6fd58aa4f |
30020250191 has 2 divisors, whose sum is σ = 30020250192. Its totient is φ = 30020250190.
The previous prime is 30020250133. The next prime is 30020250217. The reversal of 30020250191 is 19105202003.
It is a strong prime.
It is an emirp because it is prime and its reverse (19105202003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30020250191 - 214 = 30020233807 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30020550191) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010125095 + 15010125096.
It is an arithmetic number, because the mean of its divisors is an integer number (15010125096).
Almost surely, 230020250191 is an apocalyptic number.
30020250191 is a deficient number, since it is larger than the sum of its proper divisors (1).
30020250191 is an equidigital number, since it uses as much as digits as its factorization.
30020250191 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 540, while the sum is 23.
Adding to 30020250191 its reverse (19105202003), we get a palindrome (49125452194).
The spelling of 30020250191 in words is "thirty billion, twenty million, two hundred fifty thousand, one hundred ninety-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •