13235641 has 4 divisors (see below), whose sum is σ = 13243984. Its totient is φ = 13227300.

The previous prime is 13235633. The next prime is 13235669. The reversal of 13235641 is 14653231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14653231 = 23 ⋅637097.

It is a cyclic number.

It is not a de Polignac number, because 13235641 - 2³ = 13235633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13235681) 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, 975 + ... + 5236.

It is an arithmetic number, because the mean of its divisors is an integer number (3310996).

Almost surely, 2^13235641 is an apocalyptic number.

It is an amenable number.

13235641 is a deficient number, since it is larger than the sum of its proper divisors (8343).

13235641 is an equidigital number, since it uses as much as digits as its factorization.

13235641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342.

The product of its digits is 2160, while the sum is 25.

The square root of 13235641 is about 3638.0820496520. The cubic root of 13235641 is about 236.5456647427.

Adding to 13235641 its reverse (14653231), we get a palindrome (27888872).

The spelling of 13235641 in words is "thirteen million, two hundred thirty-five thousand, six hundred forty-one".