20423133223 has 8 divisors (see below), whose sum is σ = 20656585440. Its totient is φ = 20189769600.

The previous prime is 20423133221. The next prime is 20423133229. The reversal of 20423133223 is 32233132402.

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 20423133223 - 2¹ = 20423133221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423133221) 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, 515523 + ... + 553723.

It is an arithmetic number, because the mean of its divisors is an integer number (2582073180).

Almost surely, 2^20423133223 is an apocalyptic number.

20423133223 is a deficient number, since it is larger than the sum of its proper divisors (233452217).

20423133223 is an equidigital number, since it uses as much as digits as its factorization.

20423133223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44297.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20423133223 its reverse (32233132402), we get a palindrome (52656265625).

The spelling of 20423133223 in words is "twenty billion, four hundred twenty-three million, one hundred thirty-three thousand, two hundred twenty-three".