31322010120 has 128 divisors (see below), whose sum is σ = 96432336000. Its totient is φ = 8134447104.

The previous prime is 31322010103. The next prime is 31322010143. The reversal of 31322010120 is 2101022313.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 31322010120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1792144 + ... + 1809536.

It is an arithmetic number, because the mean of its divisors is an integer number (753377625).

Almost surely, 2^31322010120 is an apocalyptic number.

31322010120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31322010120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48216168000).

31322010120 is an abundant number, since it is smaller than the sum of its proper divisors (65110325880).

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

31322010120 is a wasteful number, since it uses less digits than its factorization.

31322010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17799 (or 17795 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31322010120 its reverse (2101022313), we get a palindrome (33423032433).

The spelling of 31322010120 in words is "thirty-one billion, three hundred twenty-two million, ten thousand, one hundred twenty".