20322163 has 2 divisors, whose sum is σ = 20322164. Its totient is φ = 20322162.

The previous prime is 20322131. The next prime is 20322173. The reversal of 20322163 is 36122302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20322163 - 2⁵ = 20322131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20322163.

It is not a weakly prime, because it can be changed into another prime (20322103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161081 + 10161082.

It is an arithmetic number, because the mean of its divisors is an integer number (10161082).

Almost surely, 2^20322163 is an apocalyptic number.

20322163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322163 is an equidigital number, since it uses as much as digits as its factorization.

20322163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20322163 is about 4508.0109804658. The cubic root of 20322163 is about 272.8914800783.

Adding to 20322163 its reverse (36122302), we get a palindrome (56444465).

It can be divided in two parts, 203 and 22163, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 20322163 in words is "twenty million, three hundred twenty-two thousand, one hundred sixty-three".