213543132 has 96 divisors (see below), whose sum is σ = 582833664. Its totient is φ = 60192000.

The previous prime is 213543101. The next prime is 213543149. The reversal of 213543132 is 231345312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111382 + ... + 113282.

It is an arithmetic number, because the mean of its divisors is an integer number (6071184).

Almost surely, 2^213543132 is an apocalyptic number.

213543132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213543132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291416832).

213543132 is an abundant number, since it is smaller than the sum of its proper divisors (369290532).

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

213543132 is a wasteful number, since it uses less digits than its factorization.

213543132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979 (or 1977 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 213543132 is about 14613.1150683213. The cubic root of 213543132 is about 597.7164421876.

Adding to 213543132 its reverse (231345312), we get a palindrome (444888444).

It can be divided in two parts, 213 and 543132, that added together give a palindrome (543345).

The spelling of 213543132 in words is "two hundred thirteen million, five hundred forty-three thousand, one hundred thirty-two".