31223322223 has 2 divisors, whose sum is σ = 31223322224. Its totient is φ = 31223322222.

The previous prime is 31223322161. The next prime is 31223322257. The reversal of 31223322223 is 32222332213.

It is a strong prime.

It is an emirp because it is prime and its reverse (32222332213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31223322223 - 2²¹ = 31221225071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31223322293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611661111 + 15611661112.

It is an arithmetic number, because the mean of its divisors is an integer number (15611661112).

Almost surely, 2^31223322223 is an apocalyptic number.

31223322223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223322223 is an equidigital number, since it uses as much as digits as its factorization.

31223322223 is an evil number, because the sum of its binary digits is even.

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

Adding to 31223322223 its reverse (32222332213), we get a palindrome (63445654436).

The spelling of 31223322223 in words is "thirty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, two hundred twenty-three".