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13105713 = 34368571
BaseRepresentation
bin110001111111…
…101000110001
3220122211122210
4301333220301
511323340323
61144522333
7216253035
oct61775061
926584583
1013105713
117441575
1244803a9
13293b37a
141a521c5
15123d293
hexc7fa31

13105713 has 4 divisors (see below), whose sum is σ = 17474288. Its totient is φ = 8737140.

The previous prime is 13105711. The next prime is 13105717. The reversal of 13105713 is 31750131.

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.

It is not a de Polignac number, because 13105713 - 21 = 13105711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13105713.

It is not an unprimeable number, because it can be changed into a prime (13105711) 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, 2184283 + ... + 2184288.

It is an arithmetic number, because the mean of its divisors is an integer number (4368572).

Almost surely, 213105713 is an apocalyptic number.

It is an amenable number.

13105713 is a deficient number, since it is larger than the sum of its proper divisors (4368575).

13105713 is an equidigital number, since it uses as much as digits as its factorization.

13105713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368574.

The product of its (nonzero) digits is 315, while the sum is 21.

The square root of 13105713 is about 3620.1813490487. The cubic root of 13105713 is about 235.7690993081.

Adding to 13105713 its reverse (31750131), we get a palindrome (44855844).

The spelling of 13105713 in words is "thirteen million, one hundred five thousand, seven hundred thirteen".

Divisors: 1 3 4368571 13105713