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13105343 = 31422753
BaseRepresentation
bin110001111111…
…100010111111
3220122211011002
4301333202333
511323332333
61144520515
7216251666
oct61774277
926584132
1013105343
117441269
12448013b
13293b154
141a51ddd
15123d0e8
hexc7f8bf

13105343 has 4 divisors (see below), whose sum is σ = 13528128. Its totient is φ = 12682560.

The previous prime is 13105333. The next prime is 13105357. The reversal of 13105343 is 34350131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13105343 - 222 = 8911039 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 (13105333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211346 + ... + 211407.

It is an arithmetic number, because the mean of its divisors is an integer number (3382032).

Almost surely, 213105343 is an apocalyptic number.

13105343 is a deficient number, since it is larger than the sum of its proper divisors (422785).

13105343 is an equidigital number, since it uses as much as digits as its factorization.

13105343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422784.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 13105343 is about 3620.1302462757. The cubic root of 13105343 is about 235.7668805458.

Adding to 13105343 its reverse (34350131), we get a palindrome (47455474).

The spelling of 13105343 in words is "thirteen million, one hundred five thousand, three hundred forty-three".

Divisors: 1 31 422753 13105343