31233202112020 has 96 divisors (see below), whose sum is σ = 72367102594080. Its totient is φ = 11270052003840.

The previous prime is 31233202111973. The next prime is 31233202112039. The reversal of 31233202112020 is 2021120233213.

It can be written as a sum of positive squares in 16 ways, for example, as 315354126096 + 30917847985924 = 561564^2 + 5560382^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31233202111982 and 31233202112000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10210011 + ... + 12911650.

It is an arithmetic number, because the mean of its divisors is an integer number (753823985355).

Almost surely, 2^{31233202112020} is an apocalyptic number.

It is an amenable number.

31233202112020 is an abundant number, since it is smaller than the sum of its proper divisors (41133900482060).

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

31233202112020 is a wasteful number, since it uses less digits than its factorization.

31233202112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23121853 (or 23121851 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31233202112020 its reverse (2021120233213), we get a palindrome (33254322345233).

The spelling of 31233202112020 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred two million, one hundred twelve thousand, twenty".