123031140550105 has 16 divisors (see below), whose sum is σ = 149688299059200. Its totient is φ = 97060660557120.

The previous prime is 123031140550103. The next prime is 123031140550139. The reversal of 123031140550105 is 501055041130321.

It is not a de Polignac number, because 123031140550105 - 2¹ = 123031140550103 is a prime.

It is a super-2 number, since 2×123031140550105² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123031140550103) 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, 189365865 + ... + 190014454.

It is an arithmetic number, because the mean of its divisors is an integer number (9355518691200).

Almost surely, 2^{123031140550105} is an apocalyptic number.

It is an amenable number.

123031140550105 is a deficient number, since it is larger than the sum of its proper divisors (26657158509095).

123031140550105 is an equidigital number, since it uses as much as digits as its factorization.

123031140550105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379381224.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 123031140550105 its reverse (501055041130321), we get a palindrome (624086181680426).

The spelling of 123031140550105 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred forty million, five hundred fifty thousand, one hundred five".