111345123481 has 2 divisors, whose sum is σ = 111345123482. Its totient is φ = 111345123480.

The previous prime is 111345123443. The next prime is 111345123503. The reversal of 111345123481 is 184321543111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84763081881 + 26582041600 = 291141^2 + 163040^2 .

It is an emirp because it is prime and its reverse (184321543111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111345123481 - 2⁷ = 111345123353 is a prime.

It is a super-2 number, since 2×111345123481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111345123401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55672561740 + 55672561741.

It is an arithmetic number, because the mean of its divisors is an integer number (55672561741).

Almost surely, 2^111345123481 is an apocalyptic number.

It is an amenable number.

111345123481 is a deficient number, since it is larger than the sum of its proper divisors (1).

111345123481 is an equidigital number, since it uses as much as digits as its factorization.

111345123481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 34.

Adding to 111345123481 its reverse (184321543111), we get a palindrome (295666666592).

The spelling of 111345123481 in words is "one hundred eleven billion, three hundred forty-five million, one hundred twenty-three thousand, four hundred eighty-one".