213213133 has 32 divisors (see below), whose sum is σ = 275650560. Its totient is φ = 160634880.

The previous prime is 213213127. The next prime is 213213157. The reversal of 213213133 is 331312312.

It is not a de Polignac number, because 213213133 - 2⁹ = 213212621 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 213213133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213213733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105985 + ... + 107977.

It is an arithmetic number, because the mean of its divisors is an integer number (8614080).

Almost surely, 2^213213133 is an apocalyptic number.

It is an amenable number.

213213133 is a deficient number, since it is larger than the sum of its proper divisors (62437427).

213213133 is a wasteful number, since it uses less digits than its factorization.

213213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077.

The product of its digits is 324, while the sum is 19.

The square root of 213213133 is about 14601.8195099104. The cubic root of 213213133 is about 597.4083896358.

Adding to 213213133 its reverse (331312312), we get a palindrome (544525445).

The spelling of 213213133 in words is "two hundred thirteen million, two hundred thirteen thousand, one hundred thirty-three".