13504331 has 2 divisors, whose sum is σ = 13504332. Its totient is φ = 13504330.

The previous prime is 13504301. The next prime is 13504399. The reversal of 13504331 is 13340531.

It is a happy number.

13504331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13504331 is a prime.

It is a super-2 number, since 2×13504331² = 364733911515122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13504301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6752165 + 6752166.

It is an arithmetic number, because the mean of its divisors is an integer number (6752166).

Almost surely, 2^13504331 is an apocalyptic number.

13504331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13504331 is an equidigital number, since it uses as much as digits as its factorization.

13504331 is an odious number, because the sum of its binary digits is odd.

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

The square root of 13504331 is about 3674.8239413610. The cubic root of 13504331 is about 238.1356181615.

Adding to 13504331 its reverse (13340531), we get a palindrome (26844862).

The spelling of 13504331 in words is "thirteen million, five hundred four thousand, three hundred thirty-one".