31322010222 has 48 divisors (see below), whose sum is σ = 70351632000. Its totient is φ = 10059521472.

The previous prime is 31322010157. The next prime is 31322010233. The reversal of 31322010222 is 22201022313.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31322010195 and 31322010204.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 187404 + ... + 312672.

It is an arithmetic number, because the mean of its divisors is an integer number (1465659000).

Almost surely, 2^31322010222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31322010222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35175816000).

31322010222 is an abundant number, since it is smaller than the sum of its proper divisors (39029621778).

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

31322010222 is a wasteful number, since it uses less digits than its factorization.

31322010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125785 (or 125782 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31322010222 its reverse (22201022313), we get a palindrome (53523032535).

The spelling of 31322010222 in words is "thirty-one billion, three hundred twenty-two million, ten thousand, two hundred twenty-two".