123115300000 has 576 divisors, whose sum is σ = 385535324160. Its totient is φ = 37584000000.

The previous prime is 123115299971. The next prime is 123115300019. The reversal of 123115300000 is 3511321.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 95 ways as a sum of consecutive naturals, for example, 454299865 + ... + 454300135.

It is an arithmetic number, because the mean of its divisors is an integer number (669332160).

Almost surely, 2^123115300000 is an apocalyptic number.

123115300000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123115300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192767662080).

123115300000 is an abundant number, since it is smaller than the sum of its proper divisors (262420024160).

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

123115300000 is an equidigital number, since it uses as much as digits as its factorization.

123115300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 123115300000 its reverse (3511321), we get a palindrome (123118811321).

The spelling of 123115300000 in words is "one hundred twenty-three billion, one hundred fifteen million, three hundred thousand".