211871630243 has 8 divisors (see below), whose sum is σ = 260765083488. Its totient is φ = 167634696384.

The previous prime is 211871630221. The next prime is 211871630263. The reversal of 211871630243 is 342036178112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211871630243 - 2¹⁰ = 211871629219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211871630197 and 211871630206.

It is not an unprimeable number, because it can be changed into a prime (211871630263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1164129746 + ... + 1164129927.

It is an arithmetic number, because the mean of its divisors is an integer number (32595635436).

Almost surely, 2^211871630243 is an apocalyptic number.

211871630243 is a deficient number, since it is larger than the sum of its proper divisors (48893453245).

211871630243 is a wasteful number, since it uses less digits than its factorization.

211871630243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328259693.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 211871630243 in words is "two hundred eleven billion, eight hundred seventy-one million, six hundred thirty thousand, two hundred forty-three".