13921351 has 8 divisors (see below), whose sum is σ = 15019344. Its totient is φ = 12854400.

The previous prime is 13921333. The next prime is 13921373. The reversal of 13921351 is 15312931.

13921351 is nontrivially palindromic in base 13.

13921351 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 13921351 - 2⁷ = 13921223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13921331) 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, 6825 + ... + 8626.

It is an arithmetic number, because the mean of its divisors is an integer number (1877418).

Almost surely, 2^13921351 is an apocalyptic number.

13921351 is a deficient number, since it is larger than the sum of its proper divisors (1097993).

13921351 is a wasteful number, since it uses less digits than its factorization.

13921351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15521.

The product of its digits is 810, while the sum is 25.

The square root of 13921351 is about 3731.1326698471. The cubic root of 13921351 is about 240.5620565336.

The spelling of 13921351 in words is "thirteen million, nine hundred twenty-one thousand, three hundred fifty-one".