20430167 has 2 divisors, whose sum is σ = 20430168. Its totient is φ = 20430166.

The previous prime is 20430143. The next prime is 20430173. The reversal of 20430167 is 76103402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20430167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20430127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215083 + 10215084.

It is an arithmetic number, because the mean of its divisors is an integer number (10215084).

Almost surely, 2^20430167 is an apocalyptic number.

20430167 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430167 is an equidigital number, since it uses as much as digits as its factorization.

20430167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20430167 is about 4519.9742255902. The cubic root of 20430167 is about 273.3740617807.

Adding to 20430167 its reverse (76103402), we get a palindrome (96533569).

The spelling of 20430167 in words is "twenty million, four hundred thirty thousand, one hundred sixty-seven".