213201232 has 20 divisors (see below), whose sum is σ = 413547316. Its totient is φ = 106479360.

The previous prime is 213201227. The next prime is 213201239. The reversal of 213201232 is 232102312.

It can be written as a sum of positive squares in 2 ways, for example, as 68624656 + 144576576 = 8284^2 + 12024^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213201239) 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, 7882 + ... + 22102.

Almost surely, 2^213201232 is an apocalyptic number.

It is an amenable number.

213201232 is a deficient number, since it is larger than the sum of its proper divisors (200346084).

213201232 is a wasteful number, since it uses less digits than its factorization.

213201232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15166 (or 15160 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213201232 is about 14601.4119865169. The cubic root of 213201232 is about 597.3972741706.

Adding to 213201232 its reverse (232102312), we get a palindrome (445303544).

The spelling of 213201232 in words is "two hundred thirteen million, two hundred one thousand, two hundred thirty-two".