123310110138 has 16 divisors (see below), whose sum is σ = 247169491200. Its totient is φ = 41011824896.

The previous prime is 123310110137. The next prime is 123310110149. The reversal of 123310110138 is 831011013321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123310110137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22883370 + ... + 22888757.

It is an arithmetic number, because the mean of its divisors is an integer number (15448093200).

Almost surely, 2^123310110138 is an apocalyptic number.

123310110138 is an abundant number, since it is smaller than the sum of its proper divisors (123859381062).

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

123310110138 is a wasteful number, since it uses less digits than its factorization.

123310110138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45772581.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 123310110138 its reverse (831011013321), we get a palindrome (954321123459).

The spelling of 123310110138 in words is "one hundred twenty-three billion, three hundred ten million, one hundred ten thousand, one hundred thirty-eight".