133333229 has 2 divisors, whose sum is σ = 133333230. Its totient is φ = 133333228.

The previous prime is 133333223. The next prime is 133333253. The reversal of 133333229 is 922333331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113955625 + 19377604 = 10675^2 + 4402^2 .

It is a cyclic number.

It is not a de Polignac number, because 133333229 - 2⁸ = 133332973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133333223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66666614 + 66666615.

It is an arithmetic number, because the mean of its divisors is an integer number (66666615).

Almost surely, 2^133333229 is an apocalyptic number.

It is an amenable number.

133333229 is a deficient number, since it is larger than the sum of its proper divisors (1).

133333229 is an equidigital number, since it uses as much as digits as its factorization.

133333229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 29.

The square root of 133333229 is about 11547.0008660258. Note that the first 3 decimals coincide. The cubic root of 133333229 is about 510.8728216763.

It can be divided in two parts, 13333322 and 9, that added together give a palindrome (13333331).

The spelling of 133333229 in words is "one hundred thirty-three million, three hundred thirty-three thousand, two hundred twenty-nine".