20463271 has 2 divisors, whose sum is σ = 20463272. Its totient is φ = 20463270.

The previous prime is 20463269. The next prime is 20463293. The reversal of 20463271 is 17236402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20463271 - 2¹ = 20463269 is a prime.

Together with 20463269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20463221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10231635 + 10231636.

It is an arithmetic number, because the mean of its divisors is an integer number (10231636).

Almost surely, 2^20463271 is an apocalyptic number.

20463271 is a deficient number, since it is larger than the sum of its proper divisors (1).

20463271 is an equidigital number, since it uses as much as digits as its factorization.

20463271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20463271 is about 4523.6347111587. The cubic root of 20463271 is about 273.5216358951.

Adding to 20463271 its reverse (17236402), we get a palindrome (37699673).

The spelling of 20463271 in words is "twenty million, four hundred sixty-three thousand, two hundred seventy-one".