20213203430023 has 2 divisors, whose sum is σ = 20213203430024. Its totient is φ = 20213203430022.

The previous prime is 20213203429999. The next prime is 20213203430153. The reversal of 20213203430023 is 32003430231202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213203430023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20213203430023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213203430723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106601715011 + 10106601715012.

It is an arithmetic number, because the mean of its divisors is an integer number (10106601715012).

Almost surely, 2^{20213203430023} is an apocalyptic number.

20213203430023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213203430023 is an equidigital number, since it uses as much as digits as its factorization.

20213203430023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20213203430023 its reverse (32003430231202), we get a palindrome (52216633661225).

The spelling of 20213203430023 in words is "twenty trillion, two hundred thirteen billion, two hundred three million, four hundred thirty thousand, twenty-three".