31222234120 has 256 divisors, whose sum is σ = 96206745600. Its totient is φ = 8818191360.

The previous prime is 31222234117. The next prime is 31222234159. The reversal of 31222234120 is 2143222213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31222234091 and 31222234100.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1334362 + ... + 1357558.

It is an arithmetic number, because the mean of its divisors is an integer number (375807600).

Almost surely, 2^31222234120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31222234120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48103372800).

31222234120 is an abundant number, since it is smaller than the sum of its proper divisors (64984511480).

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

31222234120 is a wasteful number, since it uses less digits than its factorization.

31222234120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23268 (or 23264 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31222234120 its reverse (2143222213), we get a palindrome (33365456333).

The spelling of 31222234120 in words is "thirty-one billion, two hundred twenty-two million, two hundred thirty-four thousand, one hundred twenty".