213045432 has 16 divisors (see below), whose sum is σ = 532613640. Its totient is φ = 71015136.

The previous prime is 213045379. The next prime is 213045433. The reversal of 213045432 is 234540312.

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: 8876893 = 213045432 / (2 + 1 + 3 + 0 + 4 + 5 + 4 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213045433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4438423 + ... + 4438470.

Almost surely, 2^213045432 is an apocalyptic number.

It is an amenable number.

213045432 is an abundant number, since it is smaller than the sum of its proper divisors (319568208).

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

213045432 is a wasteful number, since it uses less digits than its factorization.

213045432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8876902 (or 8876898 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 213045432 is about 14596.0759110112. The cubic root of 213045432 is about 597.2517197015.

Adding to 213045432 its reverse (234540312), we get a palindrome (447585744).

The spelling of 213045432 in words is "two hundred thirteen million, forty-five thousand, four hundred thirty-two".