20430344023 has 2 divisors, whose sum is σ = 20430344024. Its totient is φ = 20430344022.

The previous prime is 20430343987. The next prime is 20430344069. The reversal of 20430344023 is 32044303402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20430344023 - 2¹⁷ = 20430212951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20430344323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215172011 + 10215172012.

It is an arithmetic number, because the mean of its divisors is an integer number (10215172012).

Almost surely, 2^20430344023 is an apocalyptic number.

20430344023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430344023 is an equidigital number, since it uses as much as digits as its factorization.

20430344023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 20430344023 its reverse (32044303402), we get a palindrome (52474647425).

The spelling of 20430344023 in words is "twenty billion, four hundred thirty million, three hundred forty-four thousand, twenty-three".