13105443 has 12 divisors (see below), whose sum is σ = 18922200. Its totient is φ = 8064576.

The previous prime is 13105439. The next prime is 13105481. The reversal of 13105443 is 34450131.

It is not a de Polignac number, because 13105443 - 2² = 13105439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13105483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12418 + ... + 13431.

It is an arithmetic number, because the mean of its divisors is an integer number (1576850).

Almost surely, 2^13105443 is an apocalyptic number.

13105443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13105443 is a deficient number, since it is larger than the sum of its proper divisors (5816757).

13105443 is a wasteful number, since it uses less digits than its factorization.

13105443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25878 (or 25865 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13105443 is about 3620.1440579071. The cubic root of 13105443 is about 235.7674802154.

Adding to 13105443 its reverse (34450131), we get a palindrome (47555574).

The spelling of 13105443 in words is "thirteen million, one hundred five thousand, four hundred forty-three".