Base | Representation |
---|---|
bin | 110010011110… |
… | …100000111111 |
3 | 220220021011011 |
4 | 302132200333 |
5 | 11341412231 |
6 | 1151340051 |
7 | 220320550 |
oct | 62364077 |
9 | 26807134 |
10 | 13232191 |
11 | 75185a5 |
12 | 4521627 |
13 | 2983acb |
14 | 1a86327 |
15 | 12659b1 |
hex | c9e83f |
13232191 has 4 divisors (see below), whose sum is σ = 15122512. Its totient is φ = 11341872.
The previous prime is 13232161. The next prime is 13232203. The reversal of 13232191 is 19123231.
13232191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19123231 = 293 ⋅65267.
It is a cyclic number.
It is not a de Polignac number, because 13232191 - 29 = 13231679 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 (13232161) 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, 945150 + ... + 945163.
It is an arithmetic number, because the mean of its divisors is an integer number (3780628).
Almost surely, 213232191 is an apocalyptic number.
13232191 is a deficient number, since it is larger than the sum of its proper divisors (1890321).
13232191 is an equidigital number, since it uses as much as digits as its factorization.
13232191 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1890320.
The product of its digits is 324, while the sum is 22.
The square root of 13232191 is about 3637.6078678164. The cubic root of 13232191 is about 236.5251103053.
It can be divided in two parts, 132 and 32191, that added together give a palindrome (32323).
The spelling of 13232191 in words is "thirteen million, two hundred thirty-two thousand, one hundred ninety-one".
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