20231020423 has 2 divisors, whose sum is σ = 20231020424. Its totient is φ = 20231020422.

The previous prime is 20231020283. The next prime is 20231020429. The reversal of 20231020423 is 32402013202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20231020423 - 2⁹ = 20231019911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20231020423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20231020429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115510211 + 10115510212.

It is an arithmetic number, because the mean of its divisors is an integer number (10115510212).

Almost surely, 2^20231020423 is an apocalyptic number.

20231020423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231020423 is an equidigital number, since it uses as much as digits as its factorization.

20231020423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20231020423 its reverse (32402013202), we get a palindrome (52633033625).

The spelling of 20231020423 in words is "twenty billion, two hundred thirty-one million, twenty thousand, four hundred twenty-three".