201200831 has 16 divisors (see below), whose sum is σ = 230305824. Its totient is φ = 174127104.

The previous prime is 201200821. The next prime is 201200837. The reversal of 201200831 is 138002102.

It is a cyclic number.

It is not a de Polignac number, because 201200831 - 2¹⁸ = 200938687 is a prime.

It is a super-2 number, since 2×201200831² = 80963548790181122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60935 + ... + 64151.

It is an arithmetic number, because the mean of its divisors is an integer number (14394114).

Almost surely, 2^201200831 is an apocalyptic number.

201200831 is a deficient number, since it is larger than the sum of its proper divisors (29104993).

201200831 is a wasteful number, since it uses less digits than its factorization.

201200831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 201200831 is about 14184.5278737080. The cubic root of 201200831 is about 585.9716300181.

Adding to 201200831 its reverse (138002102), we get a palindrome (339202933).

The spelling of 201200831 in words is "two hundred one million, two hundred thousand, eight hundred thirty-one".