12312403234421 has 8 divisors (see below), whose sum is σ = 12508347321600. Its totient is φ = 12117461419440.

The previous prime is 12312403234409. The next prime is 12312403234423. The reversal of 12312403234421 is 12443230421321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12312403234421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312403234423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250543286 + ... + 250592423.

It is an arithmetic number, because the mean of its divisors is an integer number (1563543415200).

Almost surely, 2^{12312403234421} is an apocalyptic number.

It is an amenable number.

12312403234421 is a deficient number, since it is larger than the sum of its proper divisors (195944087179).

12312403234421 is an equidigital number, since it uses as much as digits as its factorization.

12312403234421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501136099.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 12312403234421 its reverse (12443230421321), we get a palindrome (24755633655742).

The spelling of 12312403234421 in words is "twelve trillion, three hundred twelve billion, four hundred three million, two hundred thirty-four thousand, four hundred twenty-one".