20104023423 has 32 divisors (see below), whose sum is σ = 30287750400. Its totient is φ = 11763638880.

The previous prime is 20104023409. The next prime is 20104023431. The reversal of 20104023423 is 32432040102.

It is not a de Polignac number, because 20104023423 - 2¹⁰ = 20104022399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20104023423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104023623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 792348 + ... + 817326.

It is an arithmetic number, because the mean of its divisors is an integer number (946492200).

Almost surely, 2^20104023423 is an apocalyptic number.

20104023423 is a deficient number, since it is larger than the sum of its proper divisors (10183726977).

20104023423 is an equidigital number, since it uses as much as digits as its factorization.

20104023423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25080 (or 25022 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20104023423 its reverse (32432040102), we get a palindrome (52536063525).

The spelling of 20104023423 in words is "twenty billion, one hundred four million, twenty-three thousand, four hundred twenty-three".