133406219 has 2 divisors, whose sum is σ = 133406220. Its totient is φ = 133406218.

The previous prime is 133406213. The next prime is 133406263. The reversal of 133406219 is 912604331.

It is a weak prime.

It is an emirp because it is prime and its reverse (912604331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133406219 is a prime.

It is a super-2 number, since 2×133406219² = 35594438535751922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133406191 and 133406200.

It is not a weakly prime, because it can be changed into another prime (133406213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66703109 + 66703110.

It is an arithmetic number, because the mean of its divisors is an integer number (66703110).

Almost surely, 2^133406219 is an apocalyptic number.

133406219 is a deficient number, since it is larger than the sum of its proper divisors (1).

133406219 is an equidigital number, since it uses as much as digits as its factorization.

133406219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 133406219 is about 11550.1609945490. The cubic root of 133406219 is about 510.9660262619.

The spelling of 133406219 in words is "one hundred thirty-three million, four hundred six thousand, two hundred nineteen".