Base | Representation |
---|---|
bin | 11000100111001001… |
… | …01111110011110101 |
3 | 1021002212011021210202 |
4 | 30103210233303311 |
5 | 204030101131010 |
6 | 10023050530245 |
7 | 645303133241 |
oct | 142344576365 |
9 | 37085137722 |
10 | 13213302005 |
11 | 5670623402 |
12 | 2689136985 |
13 | 13276357c7 |
14 | 8d4c11421 |
15 | 5250376a5 |
hex | 31392fcf5 |
13213302005 has 8 divisors (see below), whose sum is σ = 16155131832. Its totient is φ = 10371195328.
The previous prime is 13213301977. The next prime is 13213302007. The reversal of 13213302005 is 50020331231.
It can be written as a sum of positive squares in 4 ways, for example, as 2808894001 + 10404408004 = 52999^2 + 102002^2 .
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 13213302005 - 214 = 13213285621 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 (13213302007) 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, 24930494 + ... + 24931023.
It is an arithmetic number, because the mean of its divisors is an integer number (2019391479).
Almost surely, 213213302005 is an apocalyptic number.
It is an amenable number.
13213302005 is a deficient number, since it is larger than the sum of its proper divisors (2941829827).
13213302005 is an equidigital number, since it uses as much as digits as its factorization.
13213302005 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 49861575.
The product of its (nonzero) digits is 540, while the sum is 20.
Adding to 13213302005 its reverse (50020331231), we get a palindrome (63233633236).
The spelling of 13213302005 in words is "thirteen billion, two hundred thirteen million, three hundred two thousand, five".
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