206682731 has 2 divisors, whose sum is σ = 206682732. Its totient is φ = 206682730.

The previous prime is 206682713. The next prime is 206682743. The reversal of 206682731 is 137286602.

It is a happy number.

Together with previous prime (206682713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206682731 - 2⁶ = 206682667 is a prime.

It is a super-2 number, since 2×206682731² = 85435502587236722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 206682691 and 206682700.

It is not a weakly prime, because it can be changed into another prime (206681731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103341365 + 103341366.

It is an arithmetic number, because the mean of its divisors is an integer number (103341366).

Almost surely, 2^206682731 is an apocalyptic number.

206682731 is a deficient number, since it is larger than the sum of its proper divisors (1).

206682731 is an equidigital number, since it uses as much as digits as its factorization.

206682731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 206682731 is about 14376.4644819232. The cubic root of 206682731 is about 591.2457933779.

The spelling of 206682731 in words is "two hundred six million, six hundred eighty-two thousand, seven hundred thirty-one".