13312003043421 has 24 divisors (see below), whose sum is σ = 19244063384000. Its totient is φ = 8867464103232.

The previous prime is 13312003043411. The next prime is 13312003043441. The reversal of 13312003043421 is 12434030021331.

It is a happy number.

13312003043421 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 200 + 3 + 0 + 434 + 21 = 666.

13312003043421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13312003043421 - 2⁵ = 13312003043389 is a prime.

It is a super-2 number, since 2×13312003043421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312003043411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78387720 + ... + 78557358.

Almost surely, 2^{13312003043421} is an apocalyptic number.

It is an amenable number.

13312003043421 is a deficient number, since it is larger than the sum of its proper divisors (5932060340579).

13312003043421 is a wasteful number, since it uses less digits than its factorization.

13312003043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176673 (or 176670 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 13312003043421 its reverse (12434030021331), we get a palindrome (25746033064752).

The spelling of 13312003043421 in words is "thirteen trillion, three hundred twelve billion, three million, forty-three thousand, four hundred twenty-one".