12031100173 has 4 divisors (see below), whose sum is σ = 12032115840. Its totient is φ = 12030084508.

The previous prime is 12031100171. The next prime is 12031100203. The reversal of 12031100173 is 37100113021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37100113021 = 1453 ⋅25533457.

It is a cyclic number.

It is not a de Polignac number, because 12031100173 - 2¹ = 12031100171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12031100173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031100171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489853 + ... + 513826.

It is an arithmetic number, because the mean of its divisors is an integer number (3008028960).

Almost surely, 2^12031100173 is an apocalyptic number.

It is an amenable number.

12031100173 is a deficient number, since it is larger than the sum of its proper divisors (1015667).

12031100173 is a wasteful number, since it uses less digits than its factorization.

12031100173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015666.

The product of its (nonzero) digits is 126, while the sum is 19.

Adding to 12031100173 its reverse (37100113021), we get a palindrome (49131213194).

The spelling of 12031100173 in words is "twelve billion, thirty-one million, one hundred thousand, one hundred seventy-three".