206480831 has 4 divisors (see below), whose sum is σ = 212061432. Its totient is φ = 200900232.

The previous prime is 206480777. The next prime is 206480837. The reversal of 206480831 is 138084602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 206480831 - 2²² = 202286527 is a prime.

It is a super-2 number, since 2×206480831² = 85268667140901122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206480837) 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 3 ways as a sum of consecutive naturals, for example, 2790245 + ... + 2790318.

It is an arithmetic number, because the mean of its divisors is an integer number (53015358).

Almost surely, 2^206480831 is an apocalyptic number.

206480831 is a deficient number, since it is larger than the sum of its proper divisors (5580601).

206480831 is an equidigital number, since it uses as much as digits as its factorization.

206480831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580600.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 206480831 is about 14369.4408729080. The cubic root of 206480831 is about 591.0532092881.

The spelling of 206480831 in words is "two hundred six million, four hundred eighty thousand, eight hundred thirty-one".