208940233 has 2 divisors, whose sum is σ = 208940234. Its totient is φ = 208940232.

The previous prime is 208940203. The next prime is 208940261. The reversal of 208940233 is 332049802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155825289 + 53114944 = 12483^2 + 7288^2 .

It is a cyclic number.

It is not a de Polignac number, because 208940233 - 2⁵ = 208940201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 208940195 and 208940204.

It is not a weakly prime, because it can be changed into another prime (208940203) 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, 104470116 + 104470117.

It is an arithmetic number, because the mean of its divisors is an integer number (104470117).

Almost surely, 2^208940233 is an apocalyptic number.

It is an amenable number.

208940233 is a deficient number, since it is larger than the sum of its proper divisors (1).

208940233 is an equidigital number, since it uses as much as digits as its factorization.

208940233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 208940233 is about 14454.7650620825. The cubic root of 208940233 is about 593.3906399712.

The spelling of 208940233 in words is "two hundred eight million, nine hundred forty thousand, two hundred thirty-three".