Base | Representation |
---|---|
bin | 110010000000… |
… | …001111110101 |
3 | 220122222002101 |
4 | 302000033311 |
5 | 11323430323 |
6 | 1144542101 |
7 | 216263236 |
oct | 62001765 |
9 | 26588071 |
10 | 13108213 |
11 | 7443438 |
12 | 4481931 |
13 | 293c551 |
14 | 1a5308d |
15 | 123ddad |
hex | c803f5 |
13108213 has 4 divisors (see below), whose sum is σ = 13115520. Its totient is φ = 13100908.
The previous prime is 13108181. The next prime is 13108243. The reversal of 13108213 is 31280131.
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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31280131 = 1049 ⋅29819.
It is a cyclic number.
It is not a de Polignac number, because 13108213 - 25 = 13108181 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 (13108243) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098 + ... + 5236.
It is an arithmetic number, because the mean of its divisors is an integer number (3278880).
Almost surely, 213108213 is an apocalyptic number.
It is an amenable number.
13108213 is a deficient number, since it is larger than the sum of its proper divisors (7307).
13108213 is an equidigital number, since it uses as much as digits as its factorization.
13108213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7306.
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 13108213 is about 3620.5266191536. The cubic root of 13108213 is about 235.7840898514.
Adding to 13108213 its reverse (31280131), we get a palindrome (44388344).
The spelling of 13108213 in words is "thirteen million, one hundred eight thousand, two hundred thirteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •