133749211 has 2 divisors, whose sum is σ = 133749212. Its totient is φ = 133749210.

The previous prime is 133749197. The next prime is 133749331. The reversal of 133749211 is 112947331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133749211 is a prime.

It is not a weakly prime, because it can be changed into another prime (133719211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66874605 + 66874606.

It is an arithmetic number, because the mean of its divisors is an integer number (66874606).

Almost surely, 2^133749211 is an apocalyptic number.

133749211 is a deficient number, since it is larger than the sum of its proper divisors (1).

133749211 is an equidigital number, since it uses as much as digits as its factorization.

133749211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 133749211 is about 11564.9993947254. Note that the first 3 decimals coincide. The cubic root of 133749211 is about 511.4035552799.

The spelling of 133749211 in words is "one hundred thirty-three million, seven hundred forty-nine thousand, two hundred eleven".