12420311344431 has 8 divisors (see below), whose sum is σ = 16560775686960. Its totient is φ = 8280027282432.

The previous prime is 12420311344327. The next prime is 12420311344451. The reversal of 12420311344431 is 13444311302421.

It is a happy number.

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

It is not a de Polignac number, because 12420311344431 - 2⁹ = 12420311343919 is a prime.

It is a super-2 number, since 2×12420311344431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12420311344392 and 12420311344401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420311344451) 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, 44909296 + ... + 45185013.

It is an arithmetic number, because the mean of its divisors is an integer number (2070096960870).

Almost surely, 2^{12420311344431} is an apocalyptic number.

12420311344431 is a deficient number, since it is larger than the sum of its proper divisors (4140464342529).

12420311344431 is an equidigital number, since it uses as much as digits as its factorization.

12420311344431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90140265.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 12420311344431 its reverse (13444311302421), we get a palindrome (25864622646852).

The spelling of 12420311344431 in words is "twelve trillion, four hundred twenty billion, three hundred eleven million, three hundred forty-four thousand, four hundred thirty-one".