111103131113231 has 2 divisors, whose sum is σ = 111103131113232. Its totient is φ = 111103131113230.

The previous prime is 111103131113201. The next prime is 111103131113321. The reversal of 111103131113231 is 132311131301111.

It is a happy number.

Together with next prime (111103131113321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111103131113231 - 2⁶ = 111103131113167 is a prime.

It is a super-2 number, since 2×111103131113231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111103131113197 and 111103131113206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111103131113201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55551565556615 + 55551565556616.

It is an arithmetic number, because the mean of its divisors is an integer number (55551565556616).

Almost surely, 2^{111103131113231} is an apocalyptic number.

111103131113231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111103131113231 is an equidigital number, since it uses as much as digits as its factorization.

111103131113231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 23.

Adding to 111103131113231 its reverse (132311131301111), we get a palindrome (243414262414342).

The spelling of 111103131113231 in words is "one hundred eleven trillion, one hundred three billion, one hundred thirty-one million, one hundred thirteen thousand, two hundred thirty-one".