12173151831 has 8 divisors (see below), whose sum is σ = 16231896960. Its totient is φ = 8114920632.

The previous prime is 12173151821. The next prime is 12173151917. The reversal of 12173151831 is 13815137121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12173151831 - 2⁵ = 12173151799 is a prime.

It is a super-2 number, since 2×12173151831² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12173151792 and 12173151801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173151821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69321 + ... + 170738.

It is an arithmetic number, because the mean of its divisors is an integer number (2028987120).

Almost surely, 2^12173151831 is an apocalyptic number.

12173151831 is a deficient number, since it is larger than the sum of its proper divisors (4058745129).

12173151831 is a wasteful number, since it uses less digits than its factorization.

12173151831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256965.

The product of its digits is 5040, while the sum is 33.

Adding to 12173151831 its reverse (13815137121), we get a palindrome (25988288952).

The spelling of 12173151831 in words is "twelve billion, one hundred seventy-three million, one hundred fifty-one thousand, eight hundred thirty-one".