206303873 has 2 divisors, whose sum is σ = 206303874. Its totient is φ = 206303872.

The previous prime is 206303861. The next prime is 206303983. The reversal of 206303873 is 378303602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108847489 + 97456384 = 10433^2 + 9872^2 .

It is a cyclic number.

It is not a de Polignac number, because 206303873 - 2¹⁶ = 206238337 is a prime.

It is a super-2 number, since 2×206303873² = 85122576029600258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206300873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103151936 + 103151937.

It is an arithmetic number, because the mean of its divisors is an integer number (103151937).

Almost surely, 2^206303873 is an apocalyptic number.

It is an amenable number.

206303873 is a deficient number, since it is larger than the sum of its proper divisors (1).

206303873 is an equidigital number, since it uses as much as digits as its factorization.

206303873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 206303873 is about 14363.2821109940. The cubic root of 206303873 is about 590.8843130819.

The spelling of 206303873 in words is "two hundred six million, three hundred three thousand, eight hundred seventy-three".