211342143 has 16 divisors (see below), whose sum is σ = 286156800. Its totient is φ = 138721440.

The previous prime is 211342129. The next prime is 211342207. The reversal of 211342143 is 341243112.

It is not a de Polignac number, because 211342143 - 2⁹ = 211341631 is a prime.

It is a super-4 number, since 4×211342143⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211342123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101113 + ... + 103181.

It is an arithmetic number, because the mean of its divisors is an integer number (17884800).

Almost surely, 2^211342143 is an apocalyptic number.

211342143 is a deficient number, since it is larger than the sum of its proper divisors (74814657).

211342143 is a wasteful number, since it uses less digits than its factorization.

211342143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582.

The product of its digits is 576, while the sum is 21.

The square root of 211342143 is about 14537.6113237354. The cubic root of 211342143 is about 595.6557917810.

Adding to 211342143 its reverse (341243112), we get a palindrome (552585255).

The spelling of 211342143 in words is "two hundred eleven million, three hundred forty-two thousand, one hundred forty-three".