123013203015344 has 80 divisors (see below), whose sum is σ = 248106870129120. Its totient is φ = 59012404899840.

The previous prime is 123013203015341. The next prime is 123013203015377. The reversal of 123013203015344 is 443510302310321.

It is a self number, because there is not a number n which added to its sum of digits gives 123013203015344.

It is not an unprimeable number, because it can be changed into a prime (123013203015341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512740664 + ... + 512980520.

It is an arithmetic number, because the mean of its divisors is an integer number (3101335876614).

Almost surely, 2^{123013203015344} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123013203015344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124053435064560).

123013203015344 is an abundant number, since it is smaller than the sum of its proper divisors (125093667113776).

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

123013203015344 is a wasteful number, since it uses less digits than its factorization.

123013203015344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246838 (or 246832 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 123013203015344 its reverse (443510302310321), we get a palindrome (566523505325665).

The spelling of 123013203015344 in words is "one hundred twenty-three trillion, thirteen billion, two hundred three million, fifteen thousand, three hundred forty-four".