Base | Representation |
---|---|
bin | 11000001111010011… |
… | …11000010111110101 |
3 | 1020120220212012201110 |
4 | 30013221320113311 |
5 | 203122402234310 |
6 | 5551144345233 |
7 | 640324255653 |
oct | 140751702765 |
9 | 36526765643 |
10 | 13013321205 |
11 | 5578753915 |
12 | 2632175219 |
13 | 12c5087181 |
14 | 8b6435dd3 |
15 | 5126d3d20 |
hex | 307a785f5 |
13013321205 has 32 divisors (see below), whose sum is σ = 21523415040. Its totient is φ = 6707039040.
The previous prime is 13013321203. The next prime is 13013321213. The reversal of 13013321205 is 50212331031.
It is not a de Polignac number, because 13013321205 - 21 = 13013321203 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13013321201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314874 + ... + 353796.
It is an arithmetic number, because the mean of its divisors is an integer number (672606720).
Almost surely, 213013321205 is an apocalyptic number.
13013321205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13013321205 is a deficient number, since it is larger than the sum of its proper divisors (8510093835).
13013321205 is a wasteful number, since it uses less digits than its factorization.
13013321205 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 39681.
The product of its (nonzero) digits is 540, while the sum is 21.
Adding to 13013321205 its reverse (50212331031), we get a palindrome (63225652236).
The spelling of 13013321205 in words is "thirteen billion, thirteen million, three hundred twenty-one thousand, two hundred five".
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