213432043 has 4 divisors (see below), whose sum is σ = 232834968. Its totient is φ = 194029120.

The previous prime is 213432031. The next prime is 213432047. The reversal of 213432043 is 340234312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213432043 - 2⁹ = 213431531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213432047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9701446 + ... + 9701467.

It is an arithmetic number, because the mean of its divisors is an integer number (58208742).

Almost surely, 2^213432043 is an apocalyptic number.

213432043 is a deficient number, since it is larger than the sum of its proper divisors (19402925).

213432043 is a wasteful number, since it uses less digits than its factorization.

213432043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402924.

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

The square root of 213432043 is about 14609.3135704591. The cubic root of 213432043 is about 597.6127765742.

Adding to 213432043 its reverse (340234312), we get a palindrome (553666355).

The spelling of 213432043 in words is "two hundred thirteen million, four hundred thirty-two thousand, forty-three".