13312444443431 has 4 divisors (see below), whose sum is σ = 15214222221072. Its totient is φ = 11410666665792.

The previous prime is 13312444443391. The next prime is 13312444443439. The reversal of 13312444443431 is 13434444421331.

It is a happy number.

13312444443431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13312444443431 - 2⁶ = 13312444443367 is a prime.

It is a super-2 number, since 2×13312444443431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312444443439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950888888810 + ... + 950888888823.

It is an arithmetic number, because the mean of its divisors is an integer number (3803555555268).

Almost surely, 2^{13312444443431} is an apocalyptic number.

13312444443431 is a deficient number, since it is larger than the sum of its proper divisors (1901777777641).

13312444443431 is an equidigital number, since it uses as much as digits as its factorization.

13312444443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901777777640.

The product of its digits is 663552, while the sum is 41.

Adding to 13312444443431 its reverse (13434444421331), we get a palindrome (26746888864762).

The spelling of 13312444443431 in words is "thirteen trillion, three hundred twelve billion, four hundred forty-four million, four hundred forty-three thousand, four hundred thirty-one".