Base | Representation |
---|---|
bin | 11100001110101111… |
… | …111110110101000101 |
3 | 2220020111210211201002 |
4 | 130032233332311011 |
5 | 444034412331323 |
6 | 21531504143045 |
7 | 2122110464006 |
oct | 341657766505 |
9 | 86214724632 |
10 | 30312230213 |
11 | 11945511231 |
12 | 5a5b607a85 |
13 | 2b20c858c5 |
14 | 1677ac31ad |
15 | bc6251828 |
hex | 70ebfed45 |
30312230213 has 8 divisors (see below), whose sum is σ = 30380712768. Its totient is φ = 30243800704.
The previous prime is 30312230189. The next prime is 30312230237. The reversal of 30312230213 is 31203221303.
It is an interprime number because it is at equal distance from previous prime (30312230189) and next prime (30312230237).
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 30312230213 - 212 = 30312226117 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 (30312230293) 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, 1267856 + ... + 1291542.
It is an arithmetic number, because the mean of its divisors is an integer number (3797589096).
Almost surely, 230312230213 is an apocalyptic number.
It is an amenable number.
30312230213 is a deficient number, since it is larger than the sum of its proper divisors (68482555).
30312230213 is a wasteful number, since it uses less digits than its factorization.
30312230213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26523.
The product of its (nonzero) digits is 648, while the sum is 20.
Adding to 30312230213 its reverse (31203221303), we get a palindrome (61515451516).
The spelling of 30312230213 in words is "thirty billion, three hundred twelve million, two hundred thirty thousand, two hundred thirteen".
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