13431980347 has 4 divisors (see below), whose sum is σ = 14222096856. Its totient is φ = 12641863840.

The previous prime is 13431980321. The next prime is 13431980351. The reversal of 13431980347 is 74308913431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13431980347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13431980377) 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, 395058229 + ... + 395058262.

It is an arithmetic number, because the mean of its divisors is an integer number (3555524214).

Almost surely, 2^13431980347 is an apocalyptic number.

13431980347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13431980347 is a deficient number, since it is larger than the sum of its proper divisors (790116509).

13431980347 is an equidigital number, since it uses as much as digits as its factorization.

13431980347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790116508.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 13431980347 in words is "thirteen billion, four hundred thirty-one million, nine hundred eighty thousand, three hundred forty-seven".