20431000113023 has 2 divisors, whose sum is σ = 20431000113024. Its totient is φ = 20431000113022.

The previous prime is 20431000113011. The next prime is 20431000113061. The reversal of 20431000113023 is 32031100013402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20431000113023 - 2¹⁸ = 20430999850879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20431000112986 and 20431000113004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20431000103023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215500056511 + 10215500056512.

It is an arithmetic number, because the mean of its divisors is an integer number (10215500056512).

Almost surely, 2^{20431000113023} is an apocalyptic number.

20431000113023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431000113023 is an equidigital number, since it uses as much as digits as its factorization.

20431000113023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20431000113023 its reverse (32031100013402), we get a palindrome (52462100126425).

The spelling of 20431000113023 in words is "twenty trillion, four hundred thirty-one billion, one hundred thirteen thousand, twenty-three".