12313203031121 has 4 divisors (see below), whose sum is σ = 12848559684672. Its totient is φ = 11777846377572.

The previous prime is 12313203031111. The next prime is 12313203031133. The reversal of 12313203031121 is 12113030231321.

12313203031121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12313203031121 - 2²² = 12313198836817 is a prime.

It is a super-3 number, since 3×12313203031121³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 535356653527 = 12313203031121 / (1 + 2 + 3 + 1 + 3 + 2 + 0 + 3 + 0 + 3 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12313203031111) 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, 267678326741 + ... + 267678326786.

It is an arithmetic number, because the mean of its divisors is an integer number (3212139921168).

Almost surely, 2^{12313203031121} is an apocalyptic number.

It is an amenable number.

12313203031121 is a deficient number, since it is larger than the sum of its proper divisors (535356653551).

12313203031121 is an equidigital number, since it uses as much as digits as its factorization.

12313203031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535356653550.

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

Adding to 12313203031121 its reverse (12113030231321), we get a palindrome (24426233262442).

The spelling of 12313203031121 in words is "twelve trillion, three hundred thirteen billion, two hundred three million, thirty-one thousand, one hundred twenty-one".