123471231605 has 16 divisors (see below), whose sum is σ = 152976052224. Its totient is φ = 95571229440.

The previous prime is 123471231599. The next prime is 123471231641. The reversal of 123471231605 is 506132174321.

It is not a de Polignac number, because 123471231605 - 2⁸ = 123471231349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710189 + ... + 866781.

It is an arithmetic number, because the mean of its divisors is an integer number (9561003264).

Almost surely, 2^123471231605 is an apocalyptic number.

It is an amenable number.

123471231605 is a deficient number, since it is larger than the sum of its proper divisors (29504820619).

123471231605 is a wasteful number, since it uses less digits than its factorization.

123471231605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161716.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 123471231605 in words is "one hundred twenty-three billion, four hundred seventy-one million, two hundred thirty-one thousand, six hundred five".