211310032231 has 4 divisors (see below), whose sum is σ = 211312554264. Its totient is φ = 211307510200.

The previous prime is 211310032189. The next prime is 211310032247. The reversal of 211310032231 is 132230013112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211310032231 - 2¹⁹ = 211309507943 is a prime.

It is a super-2 number, since 2×211310032231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211310032199 and 211310032208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211310038231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130860 + ... + 1304401.

It is an arithmetic number, because the mean of its divisors is an integer number (52828138566).

Almost surely, 2^211310032231 is an apocalyptic number.

211310032231 is a deficient number, since it is larger than the sum of its proper divisors (2522033).

211310032231 is an equidigital number, since it uses as much as digits as its factorization.

211310032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522032.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211310032231 its reverse (132230013112), we get a palindrome (343540045343).

The spelling of 211310032231 in words is "two hundred eleven billion, three hundred ten million, thirty-two thousand, two hundred thirty-one".