13323681 has 24 divisors (see below), whose sum is σ = 22361664. Its totient is φ = 7486560.

The previous prime is 13323649. The next prime is 13323683. The reversal of 13323681 is 18632331.

It is a happy number.

13323681 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13323681 - 2⁵ = 13323649 is a prime.

It is a super-2 number, since 2×13323681² = 355040950779522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13323683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2110 + ... + 5576.

It is an arithmetic number, because the mean of its divisors is an integer number (931736).

Almost surely, 2^13323681 is an apocalyptic number.

It is an amenable number.

13323681 is a deficient number, since it is larger than the sum of its proper divisors (9037983).

13323681 is a wasteful number, since it uses less digits than its factorization.

13323681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541 (or 3538 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13323681 is about 3650.1617772367. The cubic root of 13323681 is about 237.0689859530.

The spelling of 13323681 in words is "thirteen million, three hundred twenty-three thousand, six hundred eighty-one".