123113030312 has 16 divisors (see below), whose sum is σ = 231387861600. Its totient is φ = 61409600560.

The previous prime is 123113030311. The next prime is 123113030323. The reversal of 123113030312 is 213030311321.

It is not an unprimeable number, because it can be changed into a prime (123113030311) by changing a digit.

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, 18360764 + ... + 18367467.

It is an arithmetic number, because the mean of its divisors is an integer number (14461741350).

Almost surely, 2^123113030312 is an apocalyptic number.

It is an amenable number.

123113030312 is a deficient number, since it is larger than the sum of its proper divisors (108274831288).

123113030312 is a wasteful number, since it uses less digits than its factorization.

123113030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36728656 (or 36728652 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123113030312 its reverse (213030311321), we get a palindrome (336143341633).

The spelling of 123113030312 in words is "one hundred twenty-three billion, one hundred thirteen million, thirty thousand, three hundred twelve".