31222030220 has 24 divisors (see below), whose sum is σ = 65570646624. Its totient is φ = 12487977216.

The previous prime is 31222030219. The next prime is 31222030291. The reversal of 31222030220 is 2203022213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318809 + ... + 405071.

It is an arithmetic number, because the mean of its divisors is an integer number (2732110276).

Almost surely, 2^31222030220 is an apocalyptic number.

It is an amenable number.

31222030220 is an abundant number, since it is smaller than the sum of its proper divisors (34348616404).

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

31222030220 is a wasteful number, since it uses less digits than its factorization.

31222030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104369 (or 104367 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 31222030220 its reverse (2203022213), we get a palindrome (33425052433).

The spelling of 31222030220 in words is "thirty-one billion, two hundred twenty-two million, thirty thousand, two hundred twenty".