31012320330120 has 64 divisors (see below), whose sum is σ = 93048712416000. Its totient is φ = 8268907516928.

The previous prime is 31012320330107. The next prime is 31012320330127. The reversal of 31012320330120 is 2103302321013.

It is not an unprimeable number, because it can be changed into a prime (31012320330127) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15367185 + ... + 17267744.

It is an arithmetic number, because the mean of its divisors is an integer number (1453886131500).

Almost surely, 2^{31012320330120} is an apocalyptic number.

31012320330120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31012320330120 is an abundant number, since it is smaller than the sum of its proper divisors (62036392085880).

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

31012320330120 is a wasteful number, since it uses less digits than its factorization.

31012320330120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32642862 (or 32642858 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31012320330120 its reverse (2103302321013), we get a palindrome (33115622651133).

The spelling of 31012320330120 in words is "thirty-one trillion, twelve billion, three hundred twenty million, three hundred thirty thousand, one hundred twenty".