Search a number
BaseRepresentation
bin11001010001111
3122202101
43022033
5403233
6135531
752510
oct31217
918671
1012943
1197a7
1275a7
135b78
144a07
153c7d
hex328f

12943 has 6 divisors (see below), whose sum is σ = 15144. Its totient is φ = 10836.

The previous prime is 12941. The next prime is 12953. The reversal of 12943 is 34921.

12943 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 12943 - 21 = 12941 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 12943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280 + ... + 322.

It is an arithmetic number, because the mean of its divisors is an integer number (2524).

212943 is an apocalyptic number.

12943 is a deficient number, since it is larger than the sum of its proper divisors (2201).

12943 is an frugal number, since it uses more digits than its factorization.

12943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 50 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 12943 is about 113.7673063758. The cubic root of 12943 is about 23.4789308669.

The spelling of 12943 in words is "twelve thousand, nine hundred forty-three".

Divisors: 1 7 43 301 1849 12943