200531000 has 128 divisors (see below), whose sum is σ = 494544960. Its totient is φ = 76032000.

The previous prime is 200530943. The next prime is 200531003. The reversal of 200531000 is 135002.

It is a super-2 number, since 2×200531000² = 80425363922000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200531003) 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 31 ways as a sum of consecutive naturals, for example, 2746964 + ... + 2747036.

Almost surely, 2^200531000 is an apocalyptic number.

200531000 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 200531000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247272480).

200531000 is an abundant number, since it is smaller than the sum of its proper divisors (294013960).

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

200531000 is a wasteful number, since it uses less digits than its factorization.

200531000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 200531000 is about 14160.8968642526. The cubic root of 200531000 is about 585.3206414239.

Adding to 200531000 its reverse (135002), we get a palindrome (200666002).

The spelling of 200531000 in words is "two hundred million, five hundred thirty-one thousand".