20223031223 has 4 divisors (see below), whose sum is σ = 20479019040. Its totient is φ = 19967043408.

The previous prime is 20223031181. The next prime is 20223031243. The reversal of 20223031223 is 32213032202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20223031223 - 2¹⁸ = 20222769079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20223031195 and 20223031204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223031243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127993790 + ... + 127993947.

It is an arithmetic number, because the mean of its divisors is an integer number (5119754760).

Almost surely, 2^20223031223 is an apocalyptic number.

20223031223 is a deficient number, since it is larger than the sum of its proper divisors (255987817).

20223031223 is an equidigital number, since it uses as much as digits as its factorization.

20223031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255987816.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20223031223 its reverse (32213032202), we get a palindrome (52436063425).

The spelling of 20223031223 in words is "twenty billion, two hundred twenty-three million, thirty-one thousand, two hundred twenty-three".