213201433 has 4 divisors (see below), whose sum is σ = 213465780. Its totient is φ = 212937088.

The previous prime is 213201431. The next prime is 213201481. The reversal of 213201433 is 334102312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 117787609 + 95413824 = 10853^2 + 9768^2 .

It is a cyclic number.

It is not a de Polignac number, because 213201433 - 2¹ = 213201431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213201433.

It is not an unprimeable number, because it can be changed into a prime (213201431) 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, 130960 + ... + 132577.

It is an arithmetic number, because the mean of its divisors is an integer number (53366445).

Almost surely, 2^213201433 is an apocalyptic number.

It is an amenable number.

213201433 is a deficient number, since it is larger than the sum of its proper divisors (264347).

213201433 is an equidigital number, since it uses as much as digits as its factorization.

213201433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264346.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 213201433 is about 14601.4188694113. The cubic root of 213201433 is about 597.3974619068.

Adding to 213201433 its reverse (334102312), we get a palindrome (547303745).

The spelling of 213201433 in words is "two hundred thirteen million, two hundred one thousand, four hundred thirty-three".