13728374331 has 8 divisors (see below), whose sum is σ = 20919427584. Its totient is φ = 7844785320.

The previous prime is 13728374299. The next prime is 13728374339. The reversal of 13728374331 is 13347382731.

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

It is not a de Polignac number, because 13728374331 - 2⁵ = 13728374299 is a prime.

It is a super-2 number, since 2×13728374331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13728374339) 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, 326866035 + ... + 326866076.

It is an arithmetic number, because the mean of its divisors is an integer number (2614928448).

Almost surely, 2^13728374331 is an apocalyptic number.

13728374331 is a deficient number, since it is larger than the sum of its proper divisors (7191053253).

13728374331 is an equidigital number, since it uses as much as digits as its factorization.

13728374331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653732121.

The product of its digits is 254016, while the sum is 42.

The spelling of 13728374331 in words is "thirteen billion, seven hundred twenty-eight million, three hundred seventy-four thousand, three hundred thirty-one".