200643131124 has 144 divisors (see below), whose sum is σ = 543562219200. Its totient is φ = 62213847552.

The previous prime is 200643131123. The next prime is 200643131137. The reversal of 200643131124 is 421131346002.

It is a happy number.

200643131124 is a `hidden beast` number, since 2 + 0 + 0 + 643 + 1 + 3 + 1 + 12 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200643131123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41685342 + ... + 41690154.

Almost surely, 2^200643131124 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 200643131124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271781109600).

200643131124 is an abundant number, since it is smaller than the sum of its proper divisors (342919088076).

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

200643131124 is a wasteful number, since it uses less digits than its factorization.

200643131124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5934 (or 5929 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 200643131124 its reverse (421131346002), we get a palindrome (621774477126).

The spelling of 200643131124 in words is "two hundred billion, six hundred forty-three million, one hundred thirty-one thousand, one hundred twenty-four".