213432443 has 8 divisors (see below), whose sum is σ = 244067040. Its totient is φ = 182833920.

The previous prime is 213432421. The next prime is 213432449. The reversal of 213432443 is 344234312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213432443 - 2⁶ = 213432379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213432449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5153 + ... + 21293.

It is an arithmetic number, because the mean of its divisors is an integer number (30508380).

Almost surely, 2^213432443 is an apocalyptic number.

213432443 is a deficient number, since it is larger than the sum of its proper divisors (30634597).

213432443 is a wasteful number, since it uses less digits than its factorization.

213432443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18037.

The product of its digits is 6912, while the sum is 26.

The square root of 213432443 is about 14609.3272603498. The cubic root of 213432443 is about 597.6131499092.

Adding to 213432443 its reverse (344234312), we get a palindrome (557666755).

The spelling of 213432443 in words is "two hundred thirteen million, four hundred thirty-two thousand, four hundred forty-three".