123111240330361 has 2 divisors, whose sum is σ = 123111240330362. Its totient is φ = 123111240330360.

The previous prime is 123111240330289. The next prime is 123111240330451. The reversal of 123111240330361 is 163033042111321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122282548724736 + 828691605625 = 11058144^2 + 910325^2 .

It is a cyclic number.

It is not a de Polignac number, because 123111240330361 - 2⁷ = 123111240330233 is a prime.

It is not a weakly prime, because it can be changed into another prime (123111240330061) 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, 61555620165180 + 61555620165181.

It is an arithmetic number, because the mean of its divisors is an integer number (61555620165181).

Almost surely, 2^{123111240330361} is an apocalyptic number.

It is an amenable number.

123111240330361 is a deficient number, since it is larger than the sum of its proper divisors (1).

123111240330361 is an equidigital number, since it uses as much as digits as its factorization.

123111240330361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 123111240330361 its reverse (163033042111321), we get a palindrome (286144282441682).

The spelling of 123111240330361 in words is "one hundred twenty-three trillion, one hundred eleven billion, two hundred forty million, three hundred thirty thousand, three hundred sixty-one".