213211143 has 8 divisors (see below), whose sum is σ = 315868400. Its totient is φ = 142140744.

The previous prime is 213211139. The next prime is 213211151. The reversal of 213211143 is 341112312.

It is not a de Polignac number, because 213211143 - 2² = 213211139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213211643) 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 7 ways as a sum of consecutive naturals, for example, 3948328 + ... + 3948381.

It is an arithmetic number, because the mean of its divisors is an integer number (39483550).

Almost surely, 2^213211143 is an apocalyptic number.

213211143 is a deficient number, since it is larger than the sum of its proper divisors (102657257).

213211143 is an equidigital number, since it uses as much as digits as its factorization.

213211143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896718 (or 7896712 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 213211143 is about 14601.7513675586. The cubic root of 213211143 is about 597.4065310161.

Adding to 213211143 its reverse (341112312), we get a palindrome (554323455).

The spelling of 213211143 in words is "two hundred thirteen million, two hundred eleven thousand, one hundred forty-three".