Base | Representation |
---|---|
bin | 1101101111010010010000… |
… | …10100010011011100010011 |
3 | 10221222020111011000101010021 |
4 | 12313221020110103130103 |
5 | 12424443200342222011 |
6 | 144131112434444311 |
7 | 6235513565251600 |
oct | 667511024233423 |
9 | 127866434011107 |
10 | 30212013242131 |
11 | 969892a938936 |
12 | 347b35a133697 |
13 | 13b1c9957b406 |
14 | 7663aab356a7 |
15 | 375d3cc37471 |
hex | 1b7a48513713 |
30212013242131 has 24 divisors (see below), whose sum is σ = 35235965072880. Its totient is φ = 25828690612032.
The previous prime is 30212013242093. The next prime is 30212013242141. The reversal of 30212013242131 is 13124231021203.
It is not a de Polignac number, because 30212013242131 - 221 = 30212011144979 is a prime.
It is a super-2 number, since 2×302120132421312 (a number of 28 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30212013242096 and 30212013242105.
It is not an unprimeable number, because it can be changed into a prime (30212013242141) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270010065 + ... + 270121933.
It is an arithmetic number, because the mean of its divisors is an integer number (1468165211370).
Almost surely, 230212013242131 is an apocalyptic number.
30212013242131 is a deficient number, since it is larger than the sum of its proper divisors (5023951830749).
30212013242131 is a wasteful number, since it uses less digits than its factorization.
30212013242131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 126163 (or 126156 counting only the distinct ones).
The product of its (nonzero) digits is 1728, while the sum is 25.
Adding to 30212013242131 its reverse (13124231021203), we get a palindrome (43336244263334).
The spelling of 30212013242131 in words is "thirty trillion, two hundred twelve billion, thirteen million, two hundred forty-two thousand, one hundred thirty-one".
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