13321507 has 2 divisors, whose sum is σ = 13321508. Its totient is φ = 13321506.

The previous prime is 13321493. The next prime is 13321513. The reversal of 13321507 is 70512331.

It is a strong prime.

It is an emirp because it is prime and its reverse (70512331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13321507 - 2⁷ = 13321379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13321307) 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, 6660753 + 6660754.

It is an arithmetic number, because the mean of its divisors is an integer number (6660754).

Almost surely, 2^13321507 is an apocalyptic number.

13321507 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321507 is an equidigital number, since it uses as much as digits as its factorization.

13321507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 13321507 is about 3649.8639700679. The cubic root of 13321507 is about 237.0560912179.

Adding to 13321507 its reverse (70512331), we get a palindrome (83833838).

The spelling of 13321507 in words is "thirteen million, three hundred twenty-one thousand, five hundred seven".