200551831 has 6 divisors (see below), whose sum is σ = 201451832. Its totient is φ = 199655820.

The previous prime is 200551829. The next prime is 200551843. The reversal of 200551831 is 138155002.

It is a happy number.

It is not a de Polignac number, because 200551831 - 2¹ = 200551829 is a prime.

It is a super-2 number, since 2×200551831² = 80442073834905122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200551796 and 200551805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200551811) 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, 55366 + ... + 58876.

Almost surely, 2^200551831 is an apocalyptic number.

200551831 is a deficient number, since it is larger than the sum of its proper divisors (900001).

200551831 is an frugal number, since it uses more digits than its factorization.

200551831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989 (or 3750 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 200551831 is about 14161.6323564764. The cubic root of 200551831 is about 585.3409082689.

The spelling of 200551831 in words is "two hundred million, five hundred fifty-one thousand, eight hundred thirty-one".