21314305 has 8 divisors (see below), whose sum is σ = 25826112. Its totient is φ = 16885488.

The previous prime is 21314303. The next prime is 21314327. The reversal of 21314305 is 50341312.

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 21314305 - 2¹ = 21314303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21314303) 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, 20179 + ... + 21208.

It is an arithmetic number, because the mean of its divisors is an integer number (3228264).

Almost surely, 2^21314305 is an apocalyptic number.

It is an amenable number.

21314305 is a deficient number, since it is larger than the sum of its proper divisors (4511807).

21314305 is a wasteful number, since it uses less digits than its factorization.

21314305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41495.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 21314305 is about 4616.7418164762. The cubic root of 21314305 is about 277.2620257774.

Adding to 21314305 its reverse (50341312), we get a palindrome (71655617).

The spelling of 21314305 in words is "twenty-one million, three hundred fourteen thousand, three hundred five".