213432033 has 4 divisors (see below), whose sum is σ = 284576048. Its totient is φ = 142288020.

The previous prime is 213432031. The next prime is 213432047. The reversal of 213432033 is 330234312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 213432033 - 2¹ = 213432031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213432031) 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, 35572003 + ... + 35572008.

It is an arithmetic number, because the mean of its divisors is an integer number (71144012).

Almost surely, 2^213432033 is an apocalyptic number.

It is an amenable number.

213432033 is a deficient number, since it is larger than the sum of its proper divisors (71144015).

213432033 is an equidigital number, since it uses as much as digits as its factorization.

213432033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71144014.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 213432033 is about 14609.3132282117. The cubic root of 213432033 is about 597.6127672408.

Adding to 213432033 its reverse (330234312), we get a palindrome (543666345).

The spelling of 213432033 in words is "two hundred thirteen million, four hundred thirty-two thousand, thirty-three".