13408331 has 2 divisors, whose sum is σ = 13408332. Its totient is φ = 13408330.

The previous prime is 13408313. The next prime is 13408397. The reversal of 13408331 is 13380431.

It is a happy number.

Together with previous prime (13408313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13408331 - 2¹⁸ = 13146187 is a prime.

It is a super-2 number, since 2×13408331² = 359566680411122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13408297 and 13408306.

It is not a weakly prime, because it can be changed into another prime (13408531) 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 as a sum of consecutive naturals, namely, 6704165 + 6704166.

It is an arithmetic number, because the mean of its divisors is an integer number (6704166).

Almost surely, 2^13408331 is an apocalyptic number.

13408331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13408331 is an equidigital number, since it uses as much as digits as its factorization.

13408331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13408331 is about 3661.7387946166. The cubic root of 13408331 is about 237.5699871302.

Adding to 13408331 its reverse (13380431), we get a palindrome (26788762).

The spelling of 13408331 in words is "thirteen million, four hundred eight thousand, three hundred thirty-one".