123241505431155 has 16 divisors (see below), whose sum is σ = 197194873274784. Its totient is φ = 65725981368320.

The previous prime is 123241505431141. The next prime is 123241505431237. The reversal of 123241505431155 is 551134505142321.

It is not a de Polignac number, because 123241505431155 - 2⁸ = 123241505430899 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175984416 + ... + 176683325.

It is an arithmetic number, because the mean of its divisors is an integer number (12324679579674).

Almost surely, 2^{123241505431155} is an apocalyptic number.

123241505431155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123241505431155 is a deficient number, since it is larger than the sum of its proper divisors (73953367843629).

123241505431155 is a wasteful number, since it uses less digits than its factorization.

123241505431155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352691046.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 123241505431155 in words is "one hundred twenty-three trillion, two hundred forty-one billion, five hundred five million, four hundred thirty-one thousand, one hundred fifty-five".