231111131332213 has 32 divisors (see below), whose sum is σ = 269379955728000. Its totient is φ = 197707216798080.

The previous prime is 231111131332199. The next prime is 231111131332259. The reversal of 231111131332213 is 312233131111132.

It is not a de Polignac number, because 231111131332213 - 2⁵ = 231111131332181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231111131332013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26899056 + ... + 34435177.

It is an arithmetic number, because the mean of its divisors is an integer number (8418123616500).

Almost surely, 2^{231111131332213} is an apocalyptic number.

It is an amenable number.

231111131332213 is a deficient number, since it is larger than the sum of its proper divisors (38268824395787).

231111131332213 is a wasteful number, since it uses less digits than its factorization.

231111131332213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61334434 (or 61334412 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

Adding to 231111131332213 its reverse (312233131111132), we get a palindrome (543344262443345).

The spelling of 231111131332213 in words is "two hundred thirty-one trillion, one hundred eleven billion, one hundred thirty-one million, three hundred thirty-two thousand, two hundred thirteen".