206711233 has 2 divisors, whose sum is σ = 206711234. Its totient is φ = 206711232.

The previous prime is 206711213. The next prime is 206711237. The reversal of 206711233 is 332117602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157051024 + 49660209 = 12532^2 + 7047^2 .

It is a cyclic number.

It is not a de Polignac number, because 206711233 - 2¹⁷ = 206580161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206711198 and 206711207.

It is not a weakly prime, because it can be changed into another prime (206711237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103355616 + 103355617.

It is an arithmetic number, because the mean of its divisors is an integer number (103355617).

Almost surely, 2^206711233 is an apocalyptic number.

It is an amenable number.

206711233 is a deficient number, since it is larger than the sum of its proper divisors (1).

206711233 is an equidigital number, since it uses as much as digits as its factorization.

206711233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 206711233 is about 14377.4557206760. The cubic root of 206711233 is about 591.2729701574.

Adding to 206711233 its reverse (332117602), we get a palindrome (538828835).

It can be divided in two parts, 20671 and 1233, that added together give a square (21904 = 148²).

The spelling of 206711233 in words is "two hundred six million, seven hundred eleven thousand, two hundred thirty-three".