123113112312 has 16 divisors (see below), whose sum is σ = 307782780840. Its totient is φ = 41037704096.

The previous prime is 123113112293. The next prime is 123113112337. The reversal of 123113112312 is 213211311321.

It is a nude number because it is divisible by every one of its digits.

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, 2564856483 + ... + 2564856530.

Almost surely, 2^123113112312 is an apocalyptic number.

123113112312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123113112312 is an abundant number, since it is smaller than the sum of its proper divisors (184669668528).

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

123113112312 is a wasteful number, since it uses less digits than its factorization.

123113112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129713022 (or 5129713018 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 123113112312 its reverse (213211311321), we get a palindrome (336324423633).

The spelling of 123113112312 in words is "one hundred twenty-three billion, one hundred thirteen million, one hundred twelve thousand, three hundred twelve".