111312233203231 has 2 divisors, whose sum is σ = 111312233203232. Its totient is φ = 111312233203230.

The previous prime is 111312233203207. The next prime is 111312233203247. The reversal of 111312233203231 is 132302332213111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111312233203231 - 2³¹ = 111310085719583 is a prime.

It is a super-2 number, since 2×111312233203231² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111312233203231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111312233203261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55656116601615 + 55656116601616.

It is an arithmetic number, because the mean of its divisors is an integer number (55656116601616).

Almost surely, 2^{111312233203231} is an apocalyptic number.

111312233203231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111312233203231 is an equidigital number, since it uses as much as digits as its factorization.

111312233203231 is an odious number, because the sum of its binary digits is odd.

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

Adding to 111312233203231 its reverse (132302332213111), we get a palindrome (243614565416342).

The spelling of 111312233203231 in words is "one hundred eleven trillion, three hundred twelve billion, two hundred thirty-three million, two hundred three thousand, two hundred thirty-one".