Base | Representation |
---|---|
bin | 11000010001011011… |
… | …10100001110011100 |
3 | 1020122011100222210220 |
4 | 30020231310032130 |
5 | 203141432130022 |
6 | 5553022201340 |
7 | 640631530455 |
oct | 141055641634 |
9 | 36564328726 |
10 | 13031130012 |
11 | 558780793a |
12 | 2638123250 |
13 | 12c8981124 |
14 | 8b895012c |
15 | 51405085c |
hex | 308b7439c |
13031130012 has 24 divisors (see below), whose sum is σ = 32006284800. Its totient is φ = 4115093616.
The previous prime is 13031129983. The next prime is 13031130017. The reversal of 13031130012 is 21003113031.
It is a junction number, because it is equal to n+sod(n) for n = 13031129973 and 13031130000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13031130017) 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, 28576812 + ... + 28577267.
It is an arithmetic number, because the mean of its divisors is an integer number (1333595200).
Almost surely, 213031130012 is an apocalyptic number.
13031130012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
13031130012 is an abundant number, since it is smaller than the sum of its proper divisors (18975154788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13031130012 is a wasteful number, since it uses less digits than its factorization.
13031130012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57154105 (or 57154103 counting only the distinct ones).
The product of its (nonzero) digits is 54, while the sum is 15.
Adding to 13031130012 its reverse (21003113031), we get a palindrome (34034243043).
The spelling of 13031130012 in words is "thirteen billion, thirty-one million, one hundred thirty thousand, twelve".
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