213324534 has 48 divisors (see below), whose sum is σ = 494505648. Its totient is φ = 66226176.

The previous prime is 213324511. The next prime is 213324557. The reversal of 213324534 is 435423312.

It is an interprime number because it is at equal distance from previous prime (213324511) and next prime (213324557).

It is a junction number, because it is equal to n+sod(n) for n = 213324498 and 213324507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26089 + ... + 33275.

It is an arithmetic number, because the mean of its divisors is an integer number (10302201).

Almost surely, 2^213324534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213324534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247252824).

213324534 is an abundant number, since it is smaller than the sum of its proper divisors (281181114).

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

213324534 is a wasteful number, since it uses less digits than its factorization.

213324534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7309 (or 7306 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 213324534 is about 14605.6336391134. The cubic root of 213324534 is about 597.5124174750.

Adding to 213324534 its reverse (435423312), we get a palindrome (648747846).

The spelling of 213324534 in words is "two hundred thirteen million, three hundred twenty-four thousand, five hundred thirty-four".