213013332 has 144 divisors (see below), whose sum is σ = 686125440. Its totient is φ = 54245376.

The previous prime is 213013303. The next prime is 213013337. The reversal of 213013332 is 233310312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213013337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80088 + ... + 82704.

It is an arithmetic number, because the mean of its divisors is an integer number (4764760).

Almost surely, 2^213013332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213013332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343062720).

213013332 is an abundant number, since it is smaller than the sum of its proper divisors (473112108).

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

213013332 is a wasteful number, since it uses less digits than its factorization.

213013332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670 (or 2665 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 213013332 is about 14594.9762589735. The cubic root of 213013332 is about 597.2217218070.

Adding to 213013332 its reverse (233310312), we get a palindrome (446323644).

The spelling of 213013332 in words is "two hundred thirteen million, thirteen thousand, three hundred thirty-two".