12013313012231 has 4 divisors (see below), whose sum is σ = 12400839238464. Its totient is φ = 11625786786000.

The previous prime is 12013313012221. The next prime is 12013313012317. The reversal of 12013313012231 is 13221031331021.

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 12013313012231 - 2³⁰ = 12012239270407 is a prime.

It is a super-2 number, since 2×12013313012231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12013313012197 and 12013313012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013313012221) 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, 193763113070 + ... + 193763113131.

It is an arithmetic number, because the mean of its divisors is an integer number (3100209809616).

Almost surely, 2^{12013313012231} is an apocalyptic number.

12013313012231 is a deficient number, since it is larger than the sum of its proper divisors (387526226233).

12013313012231 is an equidigital number, since it uses as much as digits as its factorization.

12013313012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387526226232.

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

Adding to 12013313012231 its reverse (13221031331021), we get a palindrome (25234344343252).

The spelling of 12013313012231 in words is "twelve trillion, thirteen billion, three hundred thirteen million, twelve thousand, two hundred thirty-one".