13913321 has 8 divisors (see below), whose sum is σ = 14765760. Its totient is φ = 13081552.

The previous prime is 13913311. The next prime is 13913323. The reversal of 13913321 is 12331931.

13913321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13913321 - 2⁶ = 13913257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13913323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3770 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (1845720).

Almost surely, 2^13913321 is an apocalyptic number.

It is an amenable number.

13913321 is a deficient number, since it is larger than the sum of its proper divisors (852439).

13913321 is a wasteful number, since it uses less digits than its factorization.

13913321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335.

The product of its digits is 486, while the sum is 23.

The square root of 13913321 is about 3730.0564338894. The cubic root of 13913321 is about 240.5157946240.

The spelling of 13913321 in words is "thirteen million, nine hundred thirteen thousand, three hundred twenty-one".