206000031 has 8 divisors (see below), whose sum is σ = 281366064. Its totient is φ = 133983680.

The previous prime is 205999987. The next prime is 206000059. The reversal of 206000031 is 130000602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206000031 - 2¹⁷ = 205868959 is a prime.

It is a super-2 number, since 2×206000031² = 84872025544001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205999980 and 206000016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206000131) 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 7 ways as a sum of consecutive naturals, for example, 837276 + ... + 837521.

It is an arithmetic number, because the mean of its divisors is an integer number (35170758).

Almost surely, 2^206000031 is an apocalyptic number.

206000031 is a deficient number, since it is larger than the sum of its proper divisors (75366033).

206000031 is a wasteful number, since it uses less digits than its factorization.

206000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674841.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 206000031 is about 14352.7011743435. The cubic root of 206000031 is about 590.5940879877.

Adding to 206000031 its reverse (130000602), we get a palindrome (336000633).

The spelling of 206000031 in words is "two hundred six million, thirty-one", and thus it is an aban number.