20300123 has 2 divisors, whose sum is σ = 20300124. Its totient is φ = 20300122.

The previous prime is 20300117. The next prime is 20300143. The reversal of 20300123 is 32100302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20300123 - 2¹⁰ = 20299099 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20300143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150061 + 10150062.

It is an arithmetic number, because the mean of its divisors is an integer number (10150062).

Almost surely, 2^20300123 is an apocalyptic number.

20300123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20300123 is an equidigital number, since it uses as much as digits as its factorization.

20300123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20300123 is about 4505.5657802323. The cubic root of 20300123 is about 272.7927913733.

Adding to 20300123 its reverse (32100302), we get a palindrome (52400425).

The spelling of 20300123 in words is "twenty million, three hundred thousand, one hundred twenty-three".