2131332213 has 4 divisors (see below), whose sum is σ = 2841776288. Its totient is φ = 1420888140.

The previous prime is 2131332179. The next prime is 2131332221. The reversal of 2131332213 is 3122331312.

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 2131332213 - 2⁶ = 2131332149 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 2131332213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131333213) 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, 355222033 + ... + 355222038.

It is an arithmetic number, because the mean of its divisors is an integer number (710444072).

Almost surely, 2^2131332213 is an apocalyptic number.

It is an amenable number.

2131332213 is a deficient number, since it is larger than the sum of its proper divisors (710444075).

2131332213 is an equidigital number, since it uses as much as digits as its factorization.

2131332213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710444074.

The product of its digits is 648, while the sum is 21.

The square root of 2131332213 is about 46166.3536896732. The cubic root of 2131332213 is about 1286.9165409614.

Adding to 2131332213 its reverse (3122331312), we get a palindrome (5253663525).

Subtracting 2131332213 from its reverse (3122331312), we obtain a palindrome (990999099).

The spelling of 2131332213 in words is "two billion, one hundred thirty-one million, three hundred thirty-two thousand, two hundred thirteen".