111313320031231 has 2 divisors, whose sum is σ = 111313320031232. Its totient is φ = 111313320031230.

The previous prime is 111313320031181. The next prime is 111313320031237. The reversal of 111313320031231 is 132130023313111.

It is a strong prime.

It is an emirp because it is prime and its reverse (132130023313111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111313320031231 - 2⁷ = 111313320031103 is a prime.

It is a super-2 number, since 2×111313320031231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111313320031196 and 111313320031205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111313320031237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55656660015615 + 55656660015616.

It is an arithmetic number, because the mean of its divisors is an integer number (55656660015616).

Almost surely, 2^{111313320031231} is an apocalyptic number.

111313320031231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111313320031231 is an equidigital number, since it uses as much as digits as its factorization.

111313320031231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 111313320031231 its reverse (132130023313111), we get a palindrome (243443343344342).

The spelling of 111313320031231 in words is "one hundred eleven trillion, three hundred thirteen billion, three hundred twenty million, thirty-one thousand, two hundred thirty-one".