Adding to 31222310322 its reverse (22301322213), we get a palindrome (53523632535).
It is a happy number.
Almost surely, 231222310322 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31222310322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36181094400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31222310322 is a wasteful number, since it uses less digits than its factorization.
31222310322 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12271.
The spelling of 31222310322 in words is "thirty-one billion, two hundred twenty-two million, three hundred ten thousand, three hundred twenty-two".