31223204322 has 16 divisors (see below), whose sum is σ = 64599733440. Its totient is φ = 10048847312.

The previous prime is 31223204321. The next prime is 31223204347. The reversal of 31223204322 is 22340232213.

It is a junction number, because it is equal to n+sod(n) for n = 31223204292 and 31223204301.

It is not an unprimeable number, because it can be changed into a prime (31223204321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89721678 + ... + 89722025.

It is an arithmetic number, because the mean of its divisors is an integer number (4037483340).

Almost surely, 2^31223204322 is an apocalyptic number.

31223204322 is an abundant number, since it is smaller than the sum of its proper divisors (33376529118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31223204322 is a wasteful number, since it uses less digits than its factorization.

31223204322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179443737.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31223204322 its reverse (22340232213), we get a palindrome (53563436535).

The spelling of 31223204322 in words is "thirty-one billion, two hundred twenty-three million, two hundred four thousand, three hundred twenty-two".