200731842 has 12 divisors (see below), whose sum is σ = 434919030. Its totient is φ = 66910608.

The previous prime is 200731841. The next prime is 200731849. The reversal of 200731842 is 248137002.

It can be written as a sum of positive squares in only one way, i.e., 178462881 + 22268961 = 13359^2 + 4719^2 .

It is not an unprimeable number, because it can be changed into a prime (200731841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5575867 + ... + 5575902.

Almost surely, 2^200731842 is an apocalyptic number.

200731842 is an abundant number, since it is smaller than the sum of its proper divisors (234187188).

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

200731842 is a wasteful number, since it uses less digits than its factorization.

200731842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151777 (or 11151774 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 200731842 is about 14167.9865189095. The cubic root of 200731842 is about 585.5159856910.

Adding to 200731842 its reverse (248137002), we get a palindrome (448868844).

The spelling of 200731842 in words is "two hundred million, seven hundred thirty-one thousand, eight hundred forty-two".