13719491731 has 8 divisors (see below), whose sum is σ = 14967581184. Its totient is φ = 12471546120.

The previous prime is 13719491699. The next prime is 13719491741.

13719491731 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 13719491731 - 2⁵ = 13719491699 is a prime.

It is a super-2 number, since 2×13719491731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13719491741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299926 + ... + 342628.

It is an arithmetic number, because the mean of its divisors is an integer number (1870947648).

Almost surely, 2^13719491731 is an apocalyptic number.

13719491731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13719491731 is a deficient number, since it is larger than the sum of its proper divisors (1248089453).

13719491731 is a wasteful number, since it uses less digits than its factorization.

13719491731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71921.

The product of its digits is 142884, while the sum is 46.

The spelling of 13719491731 in words is "thirteen billion, seven hundred nineteen million, four hundred ninety-one thousand, seven hundred thirty-one".