20203003423 has 8 divisors (see below), whose sum is σ = 20354688000. Its totient is φ = 20051533728.

The previous prime is 20203003399. The next prime is 20203003517. The reversal of 20203003423 is 32430030202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20203003423 - 2⁵ = 20203003391 is a prime.

It is a super-2 number, since 2×20203003423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20203003423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203003123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137565 + ... + 243577.

It is an arithmetic number, because the mean of its divisors is an integer number (2544336000).

Almost surely, 2^20203003423 is an apocalyptic number.

20203003423 is a deficient number, since it is larger than the sum of its proper divisors (151684577).

20203003423 is a wasteful number, since it uses less digits than its factorization.

20203003423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107441.

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 20203003423 its reverse (32430030202), we get a palindrome (52633033625).

The spelling of 20203003423 in words is "twenty billion, two hundred three million, three thousand, four hundred twenty-three".