12031213002331 has 4 divisors (see below), whose sum is σ = 12311008653592. Its totient is φ = 11751417351072.

The previous prime is 12031213002271. The next prime is 12031213002337. The reversal of 12031213002331 is 13320031213021.

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 12031213002331 - 2³³ = 12022623067739 is a prime.

It is a super-2 number, since 2×12031213002331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031213002337) 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, 139897825566 + ... + 139897825651.

It is an arithmetic number, because the mean of its divisors is an integer number (3077752163398).

Almost surely, 2^{12031213002331} is an apocalyptic number.

12031213002331 is a deficient number, since it is larger than the sum of its proper divisors (279795651261).

12031213002331 is an equidigital number, since it uses as much as digits as its factorization.

12031213002331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279795651260.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 12031213002331 its reverse (13320031213021), we get a palindrome (25351244215352).

The spelling of 12031213002331 in words is "twelve trillion, thirty-one billion, two hundred thirteen million, two thousand, three hundred thirty-one".