211233233231 has 8 divisors (see below), whose sum is σ = 214792049664. Its totient is φ = 207690630840.

The previous prime is 211233233227. The next prime is 211233233243. The reversal of 211233233231 is 132332332112.

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 211233233231 - 2² = 211233233227 is a prime.

It is a super-2 number, since 2×211233233231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211233233231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211233233201) 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, 4027235 + ... + 4079348.

It is an arithmetic number, because the mean of its divisors is an integer number (26849006208).

Almost surely, 2^211233233231 is an apocalyptic number.

211233233231 is a deficient number, since it is larger than the sum of its proper divisors (3558816433).

211233233231 is an equidigital number, since it uses as much as digits as its factorization.

211233233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107021.

The product of its digits is 3888, while the sum is 26.

Adding to 211233233231 its reverse (132332332112), we get a palindrome (343565565343).

The spelling of 211233233231 in words is "two hundred eleven billion, two hundred thirty-three million, two hundred thirty-three thousand, two hundred thirty-one".