12400321324331 has 6 divisors (see below), whose sum is σ = 12813235250796. Its totient is φ = 12000310958100.

The previous prime is 12400321324297. The next prime is 12400321324343. The reversal of 12400321324331 is 13342312300421.

It is not a de Polignac number, because 12400321324331 - 2⁴² = 8002274813227 is a prime.

It is a super-2 number, since 2×12400321324331² (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 = 12400321324294 and 12400321324303.

It is not an unprimeable number, because it can be changed into a prime (12400321224331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6451779125 + ... + 6451781046.

It is an arithmetic number, because the mean of its divisors is an integer number (2135539208466).

Almost surely, 2^{12400321324331} is an apocalyptic number.

12400321324331 is a deficient number, since it is larger than the sum of its proper divisors (412913926465).

12400321324331 is an equidigital number, since it uses as much as digits as its factorization.

12400321324331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12903560233 (or 12903560202 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 12400321324331 its reverse (13342312300421), we get a palindrome (25742633624752).

The spelling of 12400321324331 in words is "twelve trillion, four hundred billion, three hundred twenty-one million, three hundred twenty-four thousand, three hundred thirty-one".