20430503023 has 16 divisors (see below), whose sum is σ = 23452323840. Its totient is φ = 17434561536.

The previous prime is 20430503003. The next prime is 20430503033. The reversal of 20430503023 is 32030503402.

It is not a de Polignac number, because 20430503023 - 2⁹ = 20430502511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20430502985 and 20430503003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430503003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4948386 + ... + 4952512.

It is an arithmetic number, because the mean of its divisors is an integer number (1465770240).

Almost surely, 2^20430503023 is an apocalyptic number.

20430503023 is a deficient number, since it is larger than the sum of its proper divisors (3021820817).

20430503023 is a wasteful number, since it uses less digits than its factorization.

20430503023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7086.

The product of its (nonzero) digits is 2160, while the sum is 22.

The spelling of 20430503023 in words is "twenty billion, four hundred thirty million, five hundred three thousand, twenty-three".