13000843 has 4 divisors (see below), whose sum is σ = 13011480. Its totient is φ = 12990208.

The previous prime is 13000831. The next prime is 13000849. The reversal of 13000843 is 34800031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34800031 = 7 ⋅4971433.

It is a cyclic number.

It is not a de Polignac number, because 13000843 - 2⁹ = 13000331 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 13000843.

It is not an unprimeable number, because it can be changed into a prime (13000849) 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, 3205 + ... + 6022.

It is an arithmetic number, because the mean of its divisors is an integer number (3252870).

Almost surely, 2^13000843 is an apocalyptic number.

13000843 is a deficient number, since it is larger than the sum of its proper divisors (10637).

13000843 is an equidigital number, since it uses as much as digits as its factorization.

13000843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10636.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 13000843 is about 3605.6681766352. The cubic root of 13000843 is about 235.1385511626.

Adding to 13000843 its reverse (34800031), we get a palindrome (47800874).

The spelling of 13000843 in words is "thirteen million, eight hundred forty-three", and thus it is an aban number.