13344131421 has 48 divisors (see below), whose sum is σ = 20593872000. Its totient is φ = 8307801216.

The previous prime is 13344131393. The next prime is 13344131441. The reversal of 13344131421 is 12413144331.

13344131421 is a `hidden beast` number, since 1 + 3 + 344 + 1 + 314 + 2 + 1 = 666.

It is not a de Polignac number, because 13344131421 - 2⁷ = 13344131293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13344131441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1816071 + ... + 1823403.

It is an arithmetic number, because the mean of its divisors is an integer number (429039000).

Almost surely, 2^13344131421 is an apocalyptic number.

It is an amenable number.

13344131421 is a deficient number, since it is larger than the sum of its proper divisors (7249740579).

13344131421 is a wasteful number, since it uses less digits than its factorization.

13344131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7570 (or 7567 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 13344131421 its reverse (12413144331), we get a palindrome (25757275752).

The spelling of 13344131421 in words is "thirteen billion, three hundred forty-four million, one hundred thirty-one thousand, four hundred twenty-one".