123230313012 has 48 divisors (see below), whose sum is σ = 302767234560. Its totient is φ = 38902455648.

The previous prime is 123230312971. The next prime is 123230313023. The reversal of 123230313012 is 210313032321.

It is a self number, because there is not a number n which added to its sum of digits gives 123230313012.

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 15 ways as a sum of consecutive naturals, for example, 645913 + ... + 814655.

It is an arithmetic number, because the mean of its divisors is an integer number (6307650720).

Almost surely, 2^123230313012 is an apocalyptic number.

123230313012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123230313012 is an abundant number, since it is smaller than the sum of its proper divisors (179536921548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123230313012 is a wasteful number, since it uses less digits than its factorization.

123230313012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171972 (or 171970 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123230313012 its reverse (210313032321), we get a palindrome (333543345333).

The spelling of 123230313012 in words is "one hundred twenty-three billion, two hundred thirty million, three hundred thirteen thousand, twelve".