213443230 has 64 divisors (see below), whose sum is σ = 515870208. Its totient is φ = 61407360.

The previous prime is 213443203. The next prime is 213443233. The reversal of 213443230 is 32344312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213443233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652 + ... + 20671.

It is an arithmetic number, because the mean of its divisors is an integer number (8060472).

Almost surely, 2^213443230 is an apocalyptic number.

213443230 is an abundant number, since it is smaller than the sum of its proper divisors (302426978).

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

213443230 is a wasteful number, since it uses less digits than its factorization.

213443230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21361.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 213443230 is about 14609.6964376403. The cubic root of 213443230 is about 597.6232176452.

Adding to 213443230 its reverse (32344312), we get a palindrome (245787542).

The spelling of 213443230 in words is "two hundred thirteen million, four hundred forty-three thousand, two hundred thirty".