21143314 has 8 divisors (see below), whose sum is σ = 33384240. Its totient is φ = 10015236.

The previous prime is 21143293. The next prime is 21143327. The reversal of 21143314 is 41334112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 21143291 and 21143300.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 278164 + ... + 278239.

It is an arithmetic number, because the mean of its divisors is an integer number (4173030).

Almost surely, 2^21143314 is an apocalyptic number.

21143314 is a deficient number, since it is larger than the sum of its proper divisors (12240926).

21143314 is a wasteful number, since it uses less digits than its factorization.

21143314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556424.

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

The square root of 21143314 is about 4598.1859466533. The cubic root of 21143314 is about 276.5186024085.

Adding to 21143314 its reverse (41334112), we get a palindrome (62477426).

The spelling of 21143314 in words is "twenty-one million, one hundred forty-three thousand, three hundred fourteen".