213130133 has 4 divisors (see below), whose sum is σ = 213184608. Its totient is φ = 213075660.

The previous prime is 213130117. The next prime is 213130147. The reversal of 213130133 is 331031312.

213130133 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213130133 - 2⁴ = 213130117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213130103) 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, 20873 + ... + 29358.

It is an arithmetic number, because the mean of its divisors is an integer number (53296152).

Almost surely, 2^213130133 is an apocalyptic number.

It is an amenable number.

213130133 is a deficient number, since it is larger than the sum of its proper divisors (54475).

213130133 is an equidigital number, since it uses as much as digits as its factorization.

213130133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54474.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 213130133 is about 14598.9771217027. The cubic root of 213130133 is about 597.3308594962.

Adding to 213130133 its reverse (331031312), we get a palindrome (544161445).

The spelling of 213130133 in words is "two hundred thirteen million, one hundred thirty thousand, one hundred thirty-three".