21330314 has 4 divisors (see below), whose sum is σ = 31995474. Its totient is φ = 10665156.

The previous prime is 21330313. The next prime is 21330347. The reversal of 21330314 is 41303312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15737089 + 5593225 = 3967^2 + 2365^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21330292 and 21330301.

It is not an unprimeable number, because it can be changed into a prime (21330311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332577 + ... + 5332580.

Almost surely, 2^21330314 is an apocalyptic number.

21330314 is a deficient number, since it is larger than the sum of its proper divisors (10665160).

21330314 is a wasteful number, since it uses less digits than its factorization.

21330314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665159.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 21330314 is about 4618.4752895301. The cubic root of 21330314 is about 277.3314248179.

Adding to 21330314 its reverse (41303312), we get a palindrome (62633626).

The spelling of 21330314 in words is "twenty-one million, three hundred thirty thousand, three hundred fourteen".