20309327 has 2 divisors, whose sum is σ = 20309328. Its totient is φ = 20309326.

The previous prime is 20309297. The next prime is 20309369. The reversal of 20309327 is 72390302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20309327 - 2⁸ = 20309071 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20309296 and 20309305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20309827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10154663 + 10154664.

It is an arithmetic number, because the mean of its divisors is an integer number (10154664).

Almost surely, 2^20309327 is an apocalyptic number.

20309327 is a deficient number, since it is larger than the sum of its proper divisors (1).

20309327 is an equidigital number, since it uses as much as digits as its factorization.

20309327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 20309327 is about 4506.5870678375. The cubic root of 20309327 is about 272.8340128886.

Adding to 20309327 its reverse (72390302), we get a palindrome (92699629).

The spelling of 20309327 in words is "twenty million, three hundred nine thousand, three hundred twenty-seven".