231111442001243 has 16 divisors (see below), whose sum is σ = 236478121176000. Its totient is φ = 225824154716160.

The previous prime is 231111442001191. The next prime is 231111442001249. The reversal of 231111442001243 is 342100244111132.

It is a cyclic number.

It is not a de Polignac number, because 231111442001243 - 2⁸ = 231111442000987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231111442001249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44693678 + ... + 49595843.

It is an arithmetic number, because the mean of its divisors is an integer number (14779882573500).

Almost surely, 2^{231111442001243} is an apocalyptic number.

231111442001243 is a deficient number, since it is larger than the sum of its proper divisors (5366679174757).

231111442001243 is a wasteful number, since it uses less digits than its factorization.

231111442001243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94289942.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 231111442001243 its reverse (342100244111132), we get a palindrome (573211686112375).

The spelling of 231111442001243 in words is "two hundred thirty-one trillion, one hundred eleven billion, four hundred forty-two million, one thousand, two hundred forty-three".