Base | Representation |
---|---|
bin | 110001101101… |
… | …111000110101 |
3 | 220112010221012 |
4 | 301231320311 |
5 | 11314024023 |
6 | 1143202005 |
7 | 215531060 |
oct | 61557065 |
9 | 26463835 |
10 | 13033013 |
11 | 73a1994 |
12 | 4446305 |
13 | 2914256 |
14 | 1a338d7 |
15 | 1226978 |
hex | c6de35 |
13033013 has 4 divisors (see below), whose sum is σ = 14894880. Its totient is φ = 11171148.
The previous prime is 13033003. The next prime is 13033049. The reversal of 13033013 is 31033031.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31033031 = 1801 ⋅17231.
It is a cyclic number.
It is not a de Polignac number, because 13033013 - 26 = 13032949 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13033003) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930923 + ... + 930936.
It is an arithmetic number, because the mean of its divisors is an integer number (3723720).
Almost surely, 213033013 is an apocalyptic number.
It is an amenable number.
13033013 is a deficient number, since it is larger than the sum of its proper divisors (1861867).
13033013 is an equidigital number, since it uses as much as digits as its factorization.
13033013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1861866.
The product of its (nonzero) digits is 81, while the sum is 14.
The square root of 13033013 is about 3610.1264520789. The cubic root of 13033013 is about 235.3323379935.
Adding to 13033013 its reverse (31033031), we get a palindrome (44066044).
The spelling of 13033013 in words is "thirteen million, thirty-three thousand, thirteen".
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