13135443 has 4 divisors (see below), whose sum is σ = 17513928. Its totient is φ = 8756960.

The previous prime is 13135439. The next prime is 13135469. The reversal of 13135443 is 34453131.

It is a happy number.

13135443 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13135443 - 2² = 13135439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13135433) 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, 2189238 + ... + 2189243.

It is an arithmetic number, because the mean of its divisors is an integer number (4378482).

Almost surely, 2^13135443 is an apocalyptic number.

13135443 is a deficient number, since it is larger than the sum of its proper divisors (4378485).

13135443 is an equidigital number, since it uses as much as digits as its factorization.

13135443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378484.

The product of its digits is 2160, while the sum is 24.

The square root of 13135443 is about 3624.2851708992. The cubic root of 13135443 is about 235.9472435460.

Adding to 13135443 its reverse (34453131), we get a palindrome (47588574).

The spelling of 13135443 in words is "thirteen million, one hundred thirty-five thousand, four hundred forty-three".