13813321 has 8 divisors (see below), whose sum is σ = 14645504. Its totient is φ = 13005360.

The previous prime is 13813313. The next prime is 13813357. The reversal of 13813321 is 12331831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13813321 - 2³ = 13813313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13813292 and 13813301.

It is not an unprimeable number, because it can be changed into a prime (13813421) 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 in 7 ways as a sum of consecutive naturals, for example, 4875 + ... + 7168.

It is an arithmetic number, because the mean of its divisors is an integer number (1830688).

Almost surely, 2^13813321 is an apocalyptic number.

It is an amenable number.

13813321 is a deficient number, since it is larger than the sum of its proper divisors (832183).

13813321 is a wasteful number, since it uses less digits than its factorization.

13813321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12111.

The product of its digits is 432, while the sum is 22.

The square root of 13813321 is about 3716.6276380611. The cubic root of 13813321 is about 239.9381843113.

The spelling of 13813321 in words is "thirteen million, eight hundred thirteen thousand, three hundred twenty-one".