211133023231 has 8 divisors (see below), whose sum is σ = 229581541280. Its totient is φ = 192999864672.

The previous prime is 211133023181. The next prime is 211133023271. The reversal of 211133023231 is 132320331112.

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 211133023231 - 2⁷ = 211133023103 is a prime.

It is a super-2 number, since 2×211133023231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211133023271) 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, 78838476 + ... + 78841153.

It is an arithmetic number, because the mean of its divisors is an integer number (28697692660).

Almost surely, 2^211133023231 is an apocalyptic number.

211133023231 is a deficient number, since it is larger than the sum of its proper divisors (18448518049).

211133023231 is a wasteful number, since it uses less digits than its factorization.

211133023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157679745.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211133023231 its reverse (132320331112), we get a palindrome (343453354343).

The spelling of 211133023231 in words is "two hundred eleven billion, one hundred thirty-three million, twenty-three thousand, two hundred thirty-one".