213223133 has 16 divisors (see below), whose sum is σ = 226713600. Its totient is φ = 200119920.

The previous prime is 213223123. The next prime is 213223139. The reversal of 213223133 is 331322312.

It is a cyclic number.

It is not a de Polignac number, because 213223133 - 2⁴ = 213223117 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 (213223139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434018 + ... + 434508.

It is an arithmetic number, because the mean of its divisors is an integer number (14169600).

Almost surely, 2^213223133 is an apocalyptic number.

213223133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213223133 is a deficient number, since it is larger than the sum of its proper divisors (13490467).

213223133 is a wasteful number, since it uses less digits than its factorization.

213223133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its digits is 648, while the sum is 20.

The square root of 213223133 is about 14602.1619289748. The cubic root of 213223133 is about 597.4177292583.

Adding to 213223133 its reverse (331322312), we get a palindrome (544545445).

The spelling of 213223133 in words is "two hundred thirteen million, two hundred twenty-three thousand, one hundred thirty-three".