12340123020331 has 4 divisors (see below), whose sum is σ = 12340526415192. Its totient is φ = 12339719625472.

The previous prime is 12340123020271. The next prime is 12340123020341. The reversal of 12340123020331 is 13302032104321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12340123020331 is a prime.

It is a super-2 number, since 2×12340123020331² (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 = 12340123020296 and 12340123020305.

It is not an unprimeable number, because it can be changed into a prime (12340123020341) 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, 201651541 + ... + 201712726.

It is an arithmetic number, because the mean of its divisors is an integer number (3085131603798).

Almost surely, 2^{12340123020331} is an apocalyptic number.

12340123020331 is a deficient number, since it is larger than the sum of its proper divisors (403394861).

12340123020331 is an equidigital number, since it uses as much as digits as its factorization.

12340123020331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403394860.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 12340123020331 its reverse (13302032104321), we get a palindrome (25642155124652).

The spelling of 12340123020331 in words is "twelve trillion, three hundred forty billion, one hundred twenty-three million, twenty thousand, three hundred thirty-one".