211431443141 has 4 divisors (see below), whose sum is σ = 212952532800. Its totient is φ = 209910353484.

The previous prime is 211431443137. The next prime is 211431443191. The reversal of 211431443141 is 141344134112.

It is a happy number.

211431443141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 211431443141 - 2² = 211431443137 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 (211431443101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760544621 + ... + 760544898.

It is an arithmetic number, because the mean of its divisors is an integer number (53238133200).

Almost surely, 2^211431443141 is an apocalyptic number.

It is an amenable number.

211431443141 is a deficient number, since it is larger than the sum of its proper divisors (1521089659).

211431443141 is a wasteful number, since it uses less digits than its factorization.

211431443141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521089658.

The product of its digits is 4608, while the sum is 29.

Adding to 211431443141 its reverse (141344134112), we get a palindrome (352775577253).

The spelling of 211431443141 in words is "two hundred eleven billion, four hundred thirty-one million, four hundred forty-three thousand, one hundred forty-one".