20323271 has 2 divisors, whose sum is σ = 20323272. Its totient is φ = 20323270.

The previous prime is 20323267. The next prime is 20323291. The reversal of 20323271 is 17232302.

It is an a-pointer prime, because the next prime (20323291) can be obtained adding 20323271 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20323271 - 2² = 20323267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20323201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161635 + 10161636.

It is an arithmetic number, because the mean of its divisors is an integer number (10161636).

Almost surely, 2^20323271 is an apocalyptic number.

20323271 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323271 is an equidigital number, since it uses as much as digits as its factorization.

20323271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20323271 is about 4508.1338711267. The cubic root of 20323271 is about 272.8964394957.

Adding to 20323271 its reverse (17232302), we get a palindrome (37555573).

The spelling of 20323271 in words is "twenty million, three hundred twenty-three thousand, two hundred seventy-one".