133466213 has 4 divisors (see below), whose sum is σ = 134237868. Its totient is φ = 132694560.

The previous prime is 133466209. The next prime is 133466219. The reversal of 133466213 is 312664331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99161764 + 34304449 = 9958^2 + 5857^2 .

It is a cyclic number.

It is not a de Polignac number, because 133466213 - 2² = 133466209 is a prime.

It is a super-2 number, since 2×133466213² = 35626460025122738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133466219) 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, 385568 + ... + 385913.

It is an arithmetic number, because the mean of its divisors is an integer number (33559467).

Almost surely, 2^133466213 is an apocalyptic number.

It is an amenable number.

133466213 is a deficient number, since it is larger than the sum of its proper divisors (771655).

133466213 is an equidigital number, since it uses as much as digits as its factorization.

133466213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771654.

The product of its digits is 7776, while the sum is 29.

The square root of 133466213 is about 11552.7578092852. The cubic root of 133466213 is about 511.0426101521.

The spelling of 133466213 in words is "one hundred thirty-three million, four hundred sixty-six thousand, two hundred thirteen".