12031320231101 has 4 divisors (see below), whose sum is σ = 12141699315900. Its totient is φ = 11920941146304.

The previous prime is 12031320231083. The next prime is 12031320231163. The reversal of 12031320231101 is 10113202313021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10795890204100 + 1235430027001 = 3285710^2 + 1111499^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031320231101 - 2¹⁰ = 12031320230077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031320231181) 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, 55189542236 + ... + 55189542453.

It is an arithmetic number, because the mean of its divisors is an integer number (3035424828975).

Almost surely, 2^{12031320231101} is an apocalyptic number.

It is an amenable number.

12031320231101 is a deficient number, since it is larger than the sum of its proper divisors (110379084799).

12031320231101 is a wasteful number, since it uses less digits than its factorization.

12031320231101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110379084798.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12031320231101 its reverse (10113202313021), we get a palindrome (22144522544122).

The spelling of 12031320231101 in words is "twelve trillion, thirty-one billion, three hundred twenty million, two hundred thirty-one thousand, one hundred one".