13873321 has 16 divisors (see below), whose sum is σ = 17654400. Its totient is φ = 10807440.

The previous prime is 13873289. The next prime is 13873351. The reversal of 13873321 is 12337831.

13873321 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13873321 - 2⁵ = 13873289 is a prime.

It is a Duffinian number.

13873321 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 13873321.

It is not an unprimeable number, because it can be changed into a prime (13873351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1935 + ... + 5611.

It is an arithmetic number, because the mean of its divisors is an integer number (1103400).

Almost surely, 2^13873321 is an apocalyptic number.

13873321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13873321 is a deficient number, since it is larger than the sum of its proper divisors (3781079).

13873321 is an equidigital number, since it uses as much as digits as its factorization.

13873321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709 (or 3695 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 13873321 is about 3724.6907254160. The cubic root of 13873321 is about 240.2850836833.

The spelling of 13873321 in words is "thirteen million, eight hundred seventy-three thousand, three hundred twenty-one".