202020023 has 2 divisors, whose sum is σ = 202020024. Its totient is φ = 202020022.

The previous prime is 202020019. The next prime is 202020029. The reversal of 202020023 is 320020202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202020023 - 2² = 202020019 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 202019986 and 202020013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202020029) 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, 101010011 + 101010012.

It is an arithmetic number, because the mean of its divisors is an integer number (101010012).

Almost surely, 2^202020023 is an apocalyptic number.

202020023 is a deficient number, since it is larger than the sum of its proper divisors (1).

202020023 is an equidigital number, since it uses as much as digits as its factorization.

202020023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 202020023 is about 14213.3747927788. The cubic root of 202020023 is about 586.7658170417.

Adding to 202020023 its reverse (320020202), we get a palindrome (522040225).

The spelling of 202020023 in words is "two hundred two million, twenty thousand, twenty-three".