20203112430423 has 24 divisors (see below), whose sum is σ = 32409989705040. Its totient is φ = 12432684569760.

The previous prime is 20203112430377. The next prime is 20203112430439. The reversal of 20203112430423 is 32403421130202.

20203112430423 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 311 + 24 + 304 + 23 = 666.

It is not a de Polignac number, because 20203112430423 - 2⁹ = 20203112429911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203112430463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2213792548 + ... + 2213801673.

It is an arithmetic number, because the mean of its divisors is an integer number (1350416237710).

Almost surely, 2^{20203112430423} is an apocalyptic number.

20203112430423 is a deficient number, since it is larger than the sum of its proper divisors (12206877274617).

20203112430423 is a wasteful number, since it uses less digits than its factorization.

20203112430423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427594256 (or 4427594237 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20203112430423 its reverse (32403421130202), we get a palindrome (52606533560625).

The spelling of 20203112430423 in words is "twenty trillion, two hundred three billion, one hundred twelve million, four hundred thirty thousand, four hundred twenty-three".