13000043 has 16 divisors (see below), whose sum is σ = 15321600. Its totient is φ = 11025000.

The previous prime is 13000027. The next prime is 13000049. The reversal of 13000043 is 34000031.

It is not a de Polignac number, because 13000043 - 2⁴ = 13000027 is a prime.

It is a super-3 number, since 3×13000043³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 12999988 and 13000033.

It is not an unprimeable number, because it can be changed into a prime (13000049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51668 + ... + 51918.

It is an arithmetic number, because the mean of its divisors is an integer number (957600).

Almost surely, 2^13000043 is an apocalyptic number.

13000043 is a deficient number, since it is larger than the sum of its proper divisors (2321557).

13000043 is an equidigital number, since it uses as much as digits as its factorization.

13000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 13000043 is about 3605.5572384862. The cubic root of 13000043 is about 235.1337280215.

Adding to 13000043 its reverse (34000031), we get a palindrome (47000074).

The spelling of 13000043 in words is "thirteen million, forty-three", and thus it is an aban number and an uban number.