20314321 has 2 divisors, whose sum is σ = 20314322. Its totient is φ = 20314320.

The previous prime is 20314319. The next prime is 20314351. The reversal of 20314321 is 12341302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15713296 + 4601025 = 3964^2 + 2145^2 .

It is a cyclic number.

It is not a de Polignac number, because 20314321 - 2¹ = 20314319 is a prime.

Together with 20314319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20314295 and 20314304.

It is not a weakly prime, because it can be changed into another prime (20314351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157160 + 10157161.

It is an arithmetic number, because the mean of its divisors is an integer number (10157161).

Almost surely, 2^20314321 is an apocalyptic number.

It is an amenable number.

20314321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20314321 is an equidigital number, since it uses as much as digits as its factorization.

20314321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20314321 is about 4507.1411116139. The cubic root of 20314321 is about 272.8563740660.

Adding to 20314321 its reverse (12341302), we get a palindrome (32655623).

The spelling of 20314321 in words is "twenty million, three hundred fourteen thousand, three hundred twenty-one".