206351 has 2 divisors, whose sum is σ = 206352. Its totient is φ = 206350.

The previous prime is 206347. The next prime is 206369. The reversal of 206351 is 153602.

206351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206351 - 2² = 206347 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103175 + 103176.

It is an arithmetic number, because the mean of its divisors is an integer number (103176).

2²⁰⁶³⁵¹ is an apocalyptic number.

206351 is a deficient number, since it is larger than the sum of its proper divisors (1).

206351 is an equidigital number, since it uses as much as digits as its factorization.

206351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 206351 is about 454.2587368450. The cubic root of 206351 is about 59.0929302518.

Adding to 206351 its reverse (153602), we get a palindrome (359953).

The spelling of 206351 in words is "two hundred six thousand, three hundred fifty-one".