213133099 has 4 divisors (see below), whose sum is σ = 213919840. Its totient is φ = 212346360.

The previous prime is 213133079. The next prime is 213133117. The reversal of 213133099 is 990331312.

213133099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213133099 - 2¹⁵ = 213100331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213133099.

It is not an unprimeable number, because it can be changed into a prime (213133079) 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, 392964 + ... + 393505.

It is an arithmetic number, because the mean of its divisors is an integer number (53479960).

Almost surely, 2^213133099 is an apocalyptic number.

213133099 is a deficient number, since it is larger than the sum of its proper divisors (786741).

213133099 is an equidigital number, since it uses as much as digits as its factorization.

213133099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786740.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 213133099 is about 14599.0787038087. The cubic root of 213133099 is about 597.3336303779. Note that the first 3 decimals are identical.

The spelling of 213133099 in words is "two hundred thirteen million, one hundred thirty-three thousand, ninety-nine".