123140115312 has 80 divisors (see below), whose sum is σ = 319644541440. Its totient is φ = 40849177600.

The previous prime is 123140115299. The next prime is 123140115313. The reversal of 123140115312 is 213511041321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123140115313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29033512 + ... + 29037752.

It is an arithmetic number, because the mean of its divisors is an integer number (3995556768).

Almost surely, 2^123140115312 is an apocalyptic number.

123140115312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123140115312 is an abundant number, since it is smaller than the sum of its proper divisors (196504426128).

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

123140115312 is a wasteful number, since it uses less digits than its factorization.

123140115312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022 (or 7016 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 123140115312 its reverse (213511041321), we get a palindrome (336651156633).

The spelling of 123140115312 in words is "one hundred twenty-three billion, one hundred forty million, one hundred fifteen thousand, three hundred twelve".