20312323223 has 8 divisors (see below), whose sum is σ = 20969226240. Its totient is φ = 19655524440.

The previous prime is 20312323181. The next prime is 20312323237. The reversal of 20312323223 is 32232321302.

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 20312323223 - 2⁸ = 20312322967 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 (20312323243) 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, 643238 + ... + 674076.

It is an arithmetic number, because the mean of its divisors is an integer number (2621153280).

Almost surely, 2^20312323223 is an apocalyptic number.

20312323223 is a deficient number, since it is larger than the sum of its proper divisors (656903017).

20312323223 is a wasteful number, since it uses less digits than its factorization.

20312323223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52117.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20312323223 its reverse (32232321302), we get a palindrome (52544644525).

The spelling of 20312323223 in words is "twenty billion, three hundred twelve million, three hundred twenty-three thousand, two hundred twenty-three".