12031013312213 has 4 divisors (see below), whose sum is σ = 13749729499680. Its totient is φ = 10312297124748.

The previous prime is 12031013312209. The next prime is 12031013312233. The reversal of 12031013312213 is 31221331013021.

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.

It is a cyclic number.

It is not a de Polignac number, because 12031013312213 - 2² = 12031013312209 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 (12031013312233) 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, 859358093723 + ... + 859358093736.

It is an arithmetic number, because the mean of its divisors is an integer number (3437432374920).

Almost surely, 2^{12031013312213} is an apocalyptic number.

It is an amenable number.

12031013312213 is a deficient number, since it is larger than the sum of its proper divisors (1718716187467).

12031013312213 is an equidigital number, since it uses as much as digits as its factorization.

12031013312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718716187466.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12031013312213 its reverse (31221331013021), we get a palindrome (43252344325234).

The spelling of 12031013312213 in words is "twelve trillion, thirty-one billion, thirteen million, three hundred twelve thousand, two hundred thirteen".