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13124317 = 18117247
BaseRepresentation
bin110010000100…
…001011011101
3220200210011211
4302010023131
511324434232
61145144421
7216361213
oct62041335
926623154
1013124317
117454548
12448b111
13294698b
141a58cb3
151243a47
hexc842dd

13124317 has 4 divisors (see below), whose sum is σ = 13133376. Its totient is φ = 13115260.

The previous prime is 13124311. The next prime is 13124339. The reversal of 13124317 is 71342131.

13124317 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 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13124317 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 (13124311) 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, 1813 + ... + 5434.

It is an arithmetic number, because the mean of its divisors is an integer number (3283344).

Almost surely, 213124317 is an apocalyptic number.

It is an amenable number.

13124317 is a deficient number, since it is larger than the sum of its proper divisors (9059).

13124317 is an equidigital number, since it uses as much as digits as its factorization.

13124317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058.

The product of its digits is 504, while the sum is 22.

The square root of 13124317 is about 3622.7499223656. The cubic root of 13124317 is about 235.8806072814.

Adding to 13124317 its reverse (71342131), we get a palindrome (84466448).

The spelling of 13124317 in words is "thirteen million, one hundred twenty-four thousand, three hundred seventeen".

Divisors: 1 1811 7247 13124317