213243300 has 72 divisors (see below), whose sum is σ = 685546400. Its totient is φ = 56864160.

The previous prime is 213243299. The next prime is 213243301. The reversal of 213243300 is 3342312.

It is an interprime number because it is at equal distance from previous prime (213243299) and next prime (213243301).

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

It is not an unprimeable number, because it can be changed into a prime (213243301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36790 + ... + 42189.

Almost surely, 2^213243300 is an apocalyptic number.

213243300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213243300 is an abundant number, since it is smaller than the sum of its proper divisors (472303100).

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

213243300 is a wasteful number, since it uses less digits than its factorization.

213243300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79002 (or 78989 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 213243300 is about 14602.8524610776. The cubic root of 213243300 is about 597.4365635867.

Adding to 213243300 its reverse (3342312), we get a palindrome (216585612).

The spelling of 213243300 in words is "two hundred thirteen million, two hundred forty-three thousand, three hundred".