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13000343 = 21161613
BaseRepresentation
bin110001100101…
…111010010111
3220110111010012
4301211322113
511312002333
61142350435
7215333606
oct61457227
926414105
1013000343
11737a394
12442b41b
132902415
141a25a3d
15121be48
hexc65e97

13000343 has 4 divisors (see below), whose sum is σ = 13062168. Its totient is φ = 12938520.

The previous prime is 13000333. The next prime is 13000349. The reversal of 13000343 is 34300031.

It is a happy number.

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

It is not a de Polignac number, because 13000343 - 24 = 13000327 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 (13000349) 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, 30596 + ... + 31017.

It is an arithmetic number, because the mean of its divisors is an integer number (3265542).

Almost surely, 213000343 is an apocalyptic number.

13000343 is a deficient number, since it is larger than the sum of its proper divisors (61825).

13000343 is an equidigital number, since it uses as much as digits as its factorization.

13000343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61824.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 13000343 is about 3605.5988406921. The cubic root of 13000343 is about 235.1355367226.

Adding to 13000343 its reverse (34300031), we get a palindrome (47300374).

The spelling of 13000343 in words is "thirteen million, three hundred forty-three", and thus it is an aban number.

Divisors: 1 211 61613 13000343