20312222023 has 10 divisors (see below), whose sum is σ = 21440807704. Its totient is φ = 19243034244.

The previous prime is 20312221921. The next prime is 20312222027. The reversal of 20312222023 is 32022221302.

It is not a de Polignac number, because 20312222023 - 2¹⁷ = 20312090951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312222027) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52390 + ... + 208252.

Almost surely, 2^20312222023 is an apocalyptic number.

20312222023 is a deficient number, since it is larger than the sum of its proper divisors (1128585681).

20312222023 is an frugal number, since it uses more digits than its factorization.

20312222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155939 (or 155882 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20312222023 its reverse (32022221302), we get a palindrome (52334443325).

The spelling of 20312222023 in words is "twenty billion, three hundred twelve million, two hundred twenty-two thousand, twenty-three".