31332112321020 has 96 divisors (see below), whose sum is σ = 100320350946816. Its totient is φ = 7157511993600.

The previous prime is 31332112320997. The next prime is 31332112321021. The reversal of 31332112321020 is 2012321123313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332112321021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20693326 + ... + 22155765.

It is an arithmetic number, because the mean of its divisors is an integer number (1045003655696).

Almost surely, 2^{31332112321020} is an apocalyptic number.

31332112321020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31332112321020 is an abundant number, since it is smaller than the sum of its proper divisors (68988238625796).

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

31332112321020 is a wasteful number, since it uses less digits than its factorization.

31332112321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42850851 (or 42850849 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31332112321020 its reverse (2012321123313), we get a palindrome (33344433444333).

The spelling of 31332112321020 in words is "thirty-one trillion, three hundred thirty-two billion, one hundred twelve million, three hundred twenty-one thousand, twenty".