213443300 has 72 divisors (see below), whose sum is σ = 534757440. Its totient is φ = 72432000.

The previous prime is 213443299. The next prime is 213443323. The reversal of 213443300 is 3344312.

213443300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 69191 + ... + 72209.

Almost surely, 2^213443300 is an apocalyptic number.

213443300 is a gapful number since it is divisible by the number (20) 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 213443300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267378720).

213443300 is an abundant number, since it is smaller than the sum of its proper divisors (321314140).

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

213443300 is a wasteful number, since it uses less digits than its factorization.

213443300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141 (or 3134 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 213443300 is about 14609.6988333093. The cubic root of 213443300 is about 597.6232829766.

Adding to 213443300 its reverse (3344312), we get a palindrome (216787612).

The spelling of 213443300 in words is "two hundred thirteen million, four hundred forty-three thousand, three hundred".