211232311032331 has 4 divisors (see below), whose sum is σ = 211576898816032. Its totient is φ = 210887723248632.

The previous prime is 211232311032307. The next prime is 211232311032419. The reversal of 211232311032331 is 133230113232112.

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 211232311032331 - 2¹¹ = 211232311030283 is a prime.

It is a super-2 number, since 2×211232311032331² (a number of 29 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 211232311032331.

It is not an unprimeable number, because it can be changed into a prime (211232311032131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172293890931 + ... + 172293892156.

It is an arithmetic number, because the mean of its divisors is an integer number (52894224704008).

Almost surely, 2^{211232311032331} is an apocalyptic number.

211232311032331 is a deficient number, since it is larger than the sum of its proper divisors (344587783701).

211232311032331 is an equidigital number, since it uses as much as digits as its factorization.

211232311032331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344587783700.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 211232311032331 its reverse (133230113232112), we get a palindrome (344462424264443).

The spelling of 211232311032331 in words is "two hundred eleven trillion, two hundred thirty-two billion, three hundred eleven million, thirty-two thousand, three hundred thirty-one".