133345211 has 4 divisors (see below), whose sum is σ = 140363400. Its totient is φ = 126327024.

The previous prime is 133345181. The next prime is 133345213. The reversal of 133345211 is 112543331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133345211 - 2¹⁰ = 133344187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133345213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3509066 + ... + 3509103.

It is an arithmetic number, because the mean of its divisors is an integer number (35090850).

Almost surely, 2^133345211 is an apocalyptic number.

133345211 is a deficient number, since it is larger than the sum of its proper divisors (7018189).

133345211 is an equidigital number, since it uses as much as digits as its factorization.

133345211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018188.

The product of its digits is 1080, while the sum is 23.

The square root of 133345211 is about 11547.5196903924. The cubic root of 133345211 is about 510.8881244253. Note that the first 3 decimals are identical.

Adding to 133345211 its reverse (112543331), we get a palindrome (245888542).

The spelling of 133345211 in words is "one hundred thirty-three million, three hundred forty-five thousand, two hundred eleven".