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13361 = 31431
BaseRepresentation
bin11010000110001
3200022212
43100301
5411421
6141505
753645
oct32061
920285
1013361
11a047
127895
13610a
144c25
153e5b
hex3431

13361 has 4 divisors (see below), whose sum is σ = 13824. Its totient is φ = 12900.

The previous prime is 13339. The next prime is 13367. The reversal of 13361 is 16331.

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 an emirpimes, since its reverse is a distinct semiprime: 16331 = 72333.

It is a cyclic number.

It is not a de Polignac number, because 13361 - 26 = 13297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13367) 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, 185 + ... + 246.

It is an arithmetic number, because the mean of its divisors is an integer number (3456).

213361 is an apocalyptic number.

It is an amenable number.

13361 is a deficient number, since it is larger than the sum of its proper divisors (463).

13361 is an equidigital number, since it uses as much as digits as its factorization.

13361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462.

The product of its digits is 54, while the sum is 14.

The square root of 13361 is about 115.5897919368. The cubic root of 13361 is about 23.7290119290.

Adding to 13361 its reverse (16331), we get a palindrome (29692).

The spelling of 13361 in words is "thirteen thousand, three hundred sixty-one".

Divisors: 1 31 431 13361