211431645205143 has 32 divisors (see below), whose sum is σ = 308120735069952. Its totient is φ = 127897363756800.

The previous prime is 211431645205141. The next prime is 211431645205147. The reversal of 211431645205143 is 341502546134112.

It is not a de Polignac number, because 211431645205143 - 2¹ = 211431645205141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211431645205095 and 211431645205104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211431645205141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35465880 + ... + 40996242.

It is an arithmetic number, because the mean of its divisors is an integer number (9628772970936).

Almost surely, 2^{211431645205143} is an apocalyptic number.

211431645205143 is a deficient number, since it is larger than the sum of its proper divisors (96689089864809).

211431645205143 is a wasteful number, since it uses less digits than its factorization.

211431645205143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532575.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 211431645205143 in words is "two hundred eleven trillion, four hundred thirty-one billion, six hundred forty-five million, two hundred five thousand, one hundred forty-three".