16343121 has 8 divisors (see below), whose sum is σ = 21921984. Its totient is φ = 10829840.

The previous prime is 16343111. The next prime is 16343143. The reversal of 16343121 is 12134361.

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 16343121 - 2²¹ = 14245969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16343101) 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, 15810 + ... + 16811.

It is an arithmetic number, because the mean of its divisors is an integer number (2740248).

Almost surely, 2^16343121 is an apocalyptic number.

It is an amenable number.

16343121 is a deficient number, since it is larger than the sum of its proper divisors (5578863).

16343121 is a wasteful number, since it uses less digits than its factorization.

16343121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32791.

The product of its digits is 432, while the sum is 21.

The square root of 16343121 is about 4042.6626126849. The cubic root of 16343121 is about 253.7727574694.

Adding to 16343121 its reverse (12134361), we get a palindrome (28477482).

The spelling of 16343121 in words is "sixteen million, three hundred forty-three thousand, one hundred twenty-one".