20004023423 has 2 divisors, whose sum is σ = 20004023424. Its totient is φ = 20004023422.

The previous prime is 20004023411. The next prime is 20004023467. The reversal of 20004023423 is 32432040002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20004023423 - 2¹⁰ = 20004022399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20004023395 and 20004023404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004028423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002011711 + 10002011712.

It is an arithmetic number, because the mean of its divisors is an integer number (10002011712).

Almost surely, 2^20004023423 is an apocalyptic number.

20004023423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004023423 is an equidigital number, since it uses as much as digits as its factorization.

20004023423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20004023423 its reverse (32432040002), we get a palindrome (52436063425).

The spelling of 20004023423 in words is "twenty billion, four million, twenty-three thousand, four hundred twenty-three".