13304531 has 4 divisors (see below), whose sum is σ = 13312392. Its totient is φ = 13296672.

The previous prime is 13304519. The next prime is 13304561. The reversal of 13304531 is 13540331.

It is a happy number.

13304531 is digitally balanced in base 3, 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13304531 is a prime.

It is a super-2 number, since 2×13304531² = 354021090259922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13304561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (3328098).

Almost surely, 2^13304531 is an apocalyptic number.

13304531 is a deficient number, since it is larger than the sum of its proper divisors (7861).

13304531 is an equidigital number, since it uses as much as digits as its factorization.

13304531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 13304531 is about 3647.5376625883. The cubic root of 13304531 is about 236.9553524944.

Adding to 13304531 its reverse (13540331), we get a palindrome (26844862).

The spelling of 13304531 in words is "thirteen million, three hundred four thousand, five hundred thirty-one".