213042330 has 96 divisors (see below), whose sum is σ = 584288640. Its totient is φ = 53750400.

The previous prime is 213042311. The next prime is 213042331. The reversal of 213042330 is 33240312.

213042330 is a `hidden beast` number, since 213 + 0 + 423 + 30 = 666.

213042330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (213042331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208561 + ... + 209579.

It is an arithmetic number, because the mean of its divisors is an integer number (6086340).

Almost surely, 2^213042330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213042330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292144320).

213042330 is an abundant number, since it is smaller than the sum of its proper divisors (371246310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213042330 is a wasteful number, since it uses less digits than its factorization.

213042330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 213042330 is about 14595.9696491874. The cubic root of 213042330 is about 597.2488209711.

Adding to 213042330 its reverse (33240312), we get a palindrome (246282642).

The spelling of 213042330 in words is "two hundred thirteen million, forty-two thousand, three hundred thirty".