13321331 has 2 divisors, whose sum is σ = 13321332. Its totient is φ = 13321330.

The previous prime is 13321327. The next prime is 13321339. The reversal of 13321331 is 13312331.

13321331 is digitally balanced in base 2, 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 not a de Polignac number, because 13321331 - 2² = 13321327 is a prime.

It is a super-2 number, since 2×13321331² = 354915719223122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13321339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660665 + 6660666.

It is an arithmetic number, because the mean of its divisors is an integer number (6660666).

Almost surely, 2^13321331 is an apocalyptic number.

13321331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321331 is an equidigital number, since it uses as much as digits as its factorization.

13321331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 17.

The square root of 13321331 is about 3649.8398595007. The cubic root of 13321331 is about 237.0550472405.

Adding to 13321331 its reverse (13312331), we get a palindrome (26633662).

The spelling of 13321331 in words is "thirteen million, three hundred twenty-one thousand, three hundred thirty-one".