111345123389 has 2 divisors, whose sum is σ = 111345123390. Its totient is φ = 111345123388.

The previous prime is 111345123359. The next prime is 111345123401. The reversal of 111345123389 is 983321543111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110735872900 + 609250489 = 332770^2 + 24683^2 .

It is a cyclic number.

It is not a de Polignac number, because 111345123389 - 2²⁸ = 111076687933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111345123359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55672561694 + 55672561695.

It is an arithmetic number, because the mean of its divisors is an integer number (55672561695).

Almost surely, 2^111345123389 is an apocalyptic number.

It is an amenable number.

111345123389 is a deficient number, since it is larger than the sum of its proper divisors (1).

111345123389 is an equidigital number, since it uses as much as digits as its factorization.

111345123389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The spelling of 111345123389 in words is "one hundred eleven billion, three hundred forty-five million, one hundred twenty-three thousand, three hundred eighty-nine".