42231213223 has 2 divisors, whose sum is σ = 42231213224. Its totient is φ = 42231213222.

The previous prime is 42231213209. The next prime is 42231213319. The reversal of 42231213223 is 32231213224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42231213223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42231213023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21115606611 + 21115606612.

It is an arithmetic number, because the mean of its divisors is an integer number (21115606612).

Almost surely, 2^42231213223 is an apocalyptic number.

42231213223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42231213223 is an equidigital number, since it uses as much as digits as its factorization.

42231213223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

Adding to 42231213223 its reverse (32231213224), we get a palindrome (74462426447).

Subtracting from 42231213223 its reverse (32231213224), we obtain a palindrome (9999999999).

The spelling of 42231213223 in words is "forty-two billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred twenty-three".