13231433 has 4 divisors (see below), whose sum is σ = 13240080. Its totient is φ = 13222788.

The previous prime is 13231411. The next prime is 13231481. The reversal of 13231433 is 33413231.

13231433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 13231433 - 2⁶ = 13231369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231333) 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, 1343 + ... + 5316.

It is an arithmetic number, because the mean of its divisors is an integer number (3310020).

Almost surely, 2^13231433 is an apocalyptic number.

It is an amenable number.

13231433 is a deficient number, since it is larger than the sum of its proper divisors (8647).

13231433 is an equidigital number, since it uses as much as digits as its factorization.

13231433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646.

The product of its digits is 648, while the sum is 20.

The square root of 13231433 is about 3637.5036769741. The cubic root of 13231433 is about 236.5205938082.

Adding to 13231433 its reverse (33413231), we get a palindrome (46644664).

The spelling of 13231433 in words is "thirteen million, two hundred thirty-one thousand, four hundred thirty-three".