123112314512 has 40 divisors (see below), whose sum is σ = 263508551040. Its totient is φ = 55251780480.

The previous prime is 123112314463. The next prime is 123112314551. The reversal of 123112314512 is 215413211321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4413323 + ... + 4441130.

It is an arithmetic number, because the mean of its divisors is an integer number (6587713776).

Almost surely, 2^123112314512 is an apocalyptic number.

It is an amenable number.

123112314512 is an abundant number, since it is smaller than the sum of its proper divisors (140396236528).

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

123112314512 is a wasteful number, since it uses less digits than its factorization.

123112314512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854551 (or 8854545 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

Adding to 123112314512 its reverse (215413211321), we get a palindrome (338525525833).

The spelling of 123112314512 in words is "one hundred twenty-three billion, one hundred twelve million, three hundred fourteen thousand, five hundred twelve".