12103231131231 has 16 divisors (see below), whose sum is σ = 16196589247200. Its totient is φ = 8039349364608.

The previous prime is 12103231131209. The next prime is 12103231131253. The reversal of 12103231131231 is 13213113230121.

It is an interprime number because it is at equal distance from previous prime (12103231131209) and next prime (12103231131253).

It is not a de Polignac number, because 12103231131231 - 2¹⁴ = 12103231114847 is a prime.

It is a super-2 number, since 2×12103231131231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103231131331) 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 15 ways as a sum of consecutive naturals, for example, 20036125 + ... + 20631353.

It is an arithmetic number, because the mean of its divisors is an integer number (1012286827950).

Almost surely, 2^{12103231131231} is an apocalyptic number.

12103231131231 is a deficient number, since it is larger than the sum of its proper divisors (4093358115969).

12103231131231 is a wasteful number, since it uses less digits than its factorization.

12103231131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619978.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 12103231131231 its reverse (13213113230121), we get a palindrome (25316344361352).

The spelling of 12103231131231 in words is "twelve trillion, one hundred three billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred thirty-one".