123311355144 has 16 divisors (see below), whose sum is σ = 308278387920. Its totient is φ = 41103785040.

The previous prime is 123311355143. The next prime is 123311355157. The reversal of 123311355144 is 441553113321.

123311355144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (123311355143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568986542 + ... + 2568986589.

It is an arithmetic number, because the mean of its divisors is an integer number (19267399245).

Almost surely, 2^123311355144 is an apocalyptic number.

It is an amenable number.

123311355144 is an abundant number, since it is smaller than the sum of its proper divisors (184967032776).

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

123311355144 is a wasteful number, since it uses less digits than its factorization.

123311355144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5137973140 (or 5137973136 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

Adding to 123311355144 its reverse (441553113321), we get a palindrome (564864468465).

The spelling of 123311355144 in words is "one hundred twenty-three billion, three hundred eleven million, three hundred fifty-five thousand, one hundred forty-four".