2131322200 has 96 divisors (see below), whose sum is σ = 5719678560. Its totient is φ = 723456000.

The previous prime is 2131322191. The next prime is 2131322203. The reversal of 2131322200 is 22231312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131322203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133864 + ... + 148936.

It is an arithmetic number, because the mean of its divisors is an integer number (59579985).

Almost surely, 2^2131322200 is an apocalyptic number.

2131322200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131322200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2859839280).

2131322200 is an abundant number, since it is smaller than the sum of its proper divisors (3588356360).

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

2131322200 is a wasteful number, since it uses less digits than its factorization.

2131322200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15197 (or 15188 counting only the distinct ones).

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

The square root of 2131322200 is about 46166.2452447673. The cubic root of 2131322200 is about 1286.9145256467.

Adding to 2131322200 its reverse (22231312), we get a palindrome (2153553512).

The spelling of 2131322200 in words is "two billion, one hundred thirty-one million, three hundred twenty-two thousand, two hundred".