231310111231 has 8 divisors (see below), whose sum is σ = 232743184640. Its totient is φ = 229877208792.

The previous prime is 231310111229. The next prime is 231310111237. The reversal of 231310111231 is 132111013132.

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 231310111231 - 2¹ = 231310111229 is a prime.

It is a super-3 number, since 3×231310111231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231310111199 and 231310111208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310111237) 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 7 ways as a sum of consecutive naturals, for example, 3658816 + ... + 3721498.

It is an arithmetic number, because the mean of its divisors is an integer number (29092898080).

Almost surely, 2^231310111231 is an apocalyptic number.

231310111231 is a deficient number, since it is larger than the sum of its proper divisors (1433073409).

231310111231 is a wasteful number, since it uses less digits than its factorization.

231310111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85485.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 231310111231 its reverse (132111013132), we get a palindrome (363421124363).

The spelling of 231310111231 in words is "two hundred thirty-one billion, three hundred ten million, one hundred eleven thousand, two hundred thirty-one".