31032313300120 has 128 divisors (see below), whose sum is σ = 78919631769600. Its totient is φ = 10879864358400.

The previous prime is 31032313300099. The next prime is 31032313300129. The reversal of 31032313300120 is 2100331323013.

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 = 31032313300091 and 31032313300100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032313300129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559644 + ... + 7897963.

It is an arithmetic number, because the mean of its divisors is an integer number (616559623200).

Almost surely, 2^{31032313300120} 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 31032313300120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39459815884800).

31032313300120 is an abundant number, since it is smaller than the sum of its proper divisors (47887318469480).

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

31032313300120 is a wasteful number, since it uses less digits than its factorization.

31032313300120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8457929 (or 8457925 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31032313300120 its reverse (2100331323013), we get a palindrome (33132644623133).

The spelling of 31032313300120 in words is "thirty-one trillion, thirty-two billion, three hundred thirteen million, three hundred thousand, one hundred twenty".