31232120200 has 96 divisors (see below), whose sum is σ = 76613176800. Its totient is φ = 11807976960.

The previous prime is 31232120191. The next prime is 31232120263. The reversal of 31232120200 is 202123213.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1674124 + ... + 1692676.

It is an arithmetic number, because the mean of its divisors is an integer number (798053925).

Almost surely, 2^31232120200 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 31232120200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38306588400).

31232120200 is an abundant number, since it is smaller than the sum of its proper divisors (45381056600).

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

31232120200 is a wasteful number, since it uses less digits than its factorization.

31232120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19031 (or 19022 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31232120200 its reverse (202123213), we get a palindrome (31434243413).

The spelling of 31232120200 in words is "thirty-one billion, two hundred thirty-two million, one hundred twenty thousand, two hundred".