Base | Representation |
---|---|
bin | 11000010000001000… |
… | …01111000101110101 |
3 | 1020121101212012210221 |
4 | 30020010033011311 |
5 | 203131134330010 |
6 | 5551552414341 |
7 | 640440062146 |
oct | 141004170565 |
9 | 36541765727 |
10 | 13020230005 |
11 | 5581642572 |
12 | 26345473b1 |
13 | 12c6635a13 |
14 | 8b7313acd |
15 | 5130eadda |
hex | 30810f175 |
13020230005 has 4 divisors (see below), whose sum is σ = 15624276012. Its totient is φ = 10416184000.
The previous prime is 13020229979. The next prime is 13020230017. The reversal of 13020230005 is 50003202031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50003202031 = 193603 ⋅258277.
It can be written as a sum of positive squares in 2 ways, for example, as 8325102564 + 4695127441 = 91242^2 + 68521^2 .
It is not a de Polignac number, because 13020230005 - 27 = 13020229877 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302022996 + ... + 1302023005.
It is an arithmetic number, because the mean of its divisors is an integer number (3906069003).
Almost surely, 213020230005 is an apocalyptic number.
It is an amenable number.
13020230005 is a deficient number, since it is larger than the sum of its proper divisors (2604046007).
13020230005 is an equidigital number, since it uses as much as digits as its factorization.
13020230005 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2604046006.
The product of its (nonzero) digits is 180, while the sum is 16.
Adding to 13020230005 its reverse (50003202031), we get a palindrome (63023432036).
The spelling of 13020230005 in words is "thirteen billion, twenty million, two hundred thirty thousand, five".
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