13323691 has 2 divisors, whose sum is σ = 13323692. Its totient is φ = 13323690.

The previous prime is 13323689. The next prime is 13323703. The reversal of 13323691 is 19632331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13323691 - 2¹ = 13323689 is a prime.

Together with 13323689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13323641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6661845 + 6661846.

It is an arithmetic number, because the mean of its divisors is an integer number (6661846).

Almost surely, 2^13323691 is an apocalyptic number.

13323691 is a deficient number, since it is larger than the sum of its proper divisors (1).

13323691 is an equidigital number, since it uses as much as digits as its factorization.

13323691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 28.

The square root of 13323691 is about 3650.1631470388. The cubic root of 13323691 is about 237.0690452631.

The spelling of 13323691 in words is "thirteen million, three hundred twenty-three thousand, six hundred ninety-one".