123140031104 has 64 divisors (see below), whose sum is σ = 251265616800. Its totient is φ = 60094172160.

The previous prime is 123140031023. The next prime is 123140031107. The reversal of 123140031104 is 401130041321.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (123140031107) 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, 868919 + ... + 1000649.

Almost surely, 2^123140031104 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 123140031104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125632808400).

123140031104 is an abundant number, since it is smaller than the sum of its proper divisors (128125585696).

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

123140031104 is a wasteful number, since it uses less digits than its factorization.

123140031104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131921 (or 131909 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123140031104 its reverse (401130041321), we get a palindrome (524270072425).

The spelling of 123140031104 in words is "one hundred twenty-three billion, one hundred forty million, thirty-one thousand, one hundred four".