31233220120100 has 144 divisors (see below), whose sum is σ = 69329301474048. Its totient is φ = 12207856066560.

The previous prime is 31233220120079. The next prime is 31233220120153. The reversal of 31233220120100 is 102102233213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14781456644 + ... + 14781458756.

Almost surely, 2^{31233220120100} 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 31233220120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34664650737024).

31233220120100 is an abundant number, since it is smaller than the sum of its proper divisors (38096081353948).

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

31233220120100 is a wasteful number, since it uses less digits than its factorization.

31233220120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734 (or 5727 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31233220120100 its reverse (102102233213), we get a palindrome (31335322353313).

The spelling of 31233220120100 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred twenty million, one hundred twenty thousand, one hundred".