31223432542222 has 16 divisors (see below), whose sum is σ = 50447958331392. Its totient is φ = 14451238062360.

The previous prime is 31223432542217. The next prime is 31223432542223. The reversal of 31223432542222 is 22224523432213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223432542223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10947906198 + ... + 10947909049.

It is an arithmetic number, because the mean of its divisors is an integer number (3152997395712).

Almost surely, 2^{31223432542222} is an apocalyptic number.

31223432542222 is a deficient number, since it is larger than the sum of its proper divisors (19224525789170).

31223432542222 is a wasteful number, since it uses less digits than its factorization.

31223432542222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21895815303.

The product of its digits is 276480, while the sum is 37.

Adding to 31223432542222 its reverse (22224523432213), we get a palindrome (53447955974435).

The spelling of 31223432542222 in words is "thirty-one trillion, two hundred twenty-three billion, four hundred thirty-two million, five hundred forty-two thousand, two hundred twenty-two".