12173485831 has 4 divisors (see below), whose sum is σ = 13109907832. Its totient is φ = 11237063832.

The previous prime is 12173485829. The next prime is 12173485853. The reversal of 12173485831 is 13858437121.

12173485831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12173485831 - 2¹ = 12173485829 is a prime.

It is a super-3 number, since 3×12173485831³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173485861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468210981 + ... + 468211006.

It is an arithmetic number, because the mean of its divisors is an integer number (3277476958).

Almost surely, 2^12173485831 is an apocalyptic number.

12173485831 is a deficient number, since it is larger than the sum of its proper divisors (936422001).

12173485831 is an equidigital number, since it uses as much as digits as its factorization.

12173485831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936422000.

The product of its digits is 161280, while the sum is 43.

The spelling of 12173485831 in words is "twelve billion, one hundred seventy-three million, four hundred eighty-five thousand, eight hundred thirty-one".