123005503312 has 20 divisors (see below), whose sum is σ = 238373075860. Its totient is φ = 61489870848.

The previous prime is 123005503289. The next prime is 123005503339. The reversal of 123005503312 is 213305500321.

It can be written as a sum of positive squares in 2 ways, for example, as 22868698176 + 100136805136 = 151224^2 + 316444^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726033 + ... + 879280.

It is an arithmetic number, because the mean of its divisors is an integer number (11918653793).

Almost surely, 2^123005503312 is an apocalyptic number.

It is an amenable number.

123005503312 is a deficient number, since it is larger than the sum of its proper divisors (115367572548).

123005503312 is a wasteful number, since it uses less digits than its factorization.

123005503312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610110 (or 1610104 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 123005503312 in words is "one hundred twenty-three billion, five million, five hundred three thousand, three hundred twelve".