213441432 has 16 divisors (see below), whose sum is σ = 533603640. Its totient is φ = 71147136.

The previous prime is 213441427. The next prime is 213441433. The reversal of 213441432 is 234144312.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8893393 = 213441432 / (2 + 1 + 3 + 4 + 4 + 1 + 4 + 3 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213441433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4446673 + ... + 4446720.

Almost surely, 2^213441432 is an apocalyptic number.

It is an amenable number.

213441432 is an abundant number, since it is smaller than the sum of its proper divisors (320162208).

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

213441432 is a wasteful number, since it uses less digits than its factorization.

213441432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893402 (or 8893398 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 213441432 is about 14609.6349030357. The cubic root of 213441432 is about 597.6215395572.

Adding to 213441432 its reverse (234144312), we get a palindrome (447585744).

The spelling of 213441432 in words is "two hundred thirteen million, four hundred forty-one thousand, four hundred thirty-two".