21143341 has 8 divisors (see below), whose sum is σ = 21432320. Its totient is φ = 20856528.

The previous prime is 21143327. The next prime is 21143357. The reversal of 21143341 is 14334112.

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 21143341 - 2⁹ = 21142829 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 (21140341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28720 + ... + 29446.

It is an arithmetic number, because the mean of its divisors is an integer number (2679040).

Almost surely, 2^21143341 is an apocalyptic number.

It is an amenable number.

21143341 is a deficient number, since it is larger than the sum of its proper divisors (288979).

21143341 is a wasteful number, since it uses less digits than its factorization.

21143341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083.

The product of its digits is 288, while the sum is 19.

The square root of 21143341 is about 4598.1888825928. The cubic root of 21143341 is about 276.5187201131.

Adding to 21143341 its reverse (14334112), we get a palindrome (35477453).

The spelling of 21143341 in words is "twenty-one million, one hundred forty-three thousand, three hundred forty-one".