831514987349 has 4 divisors (see below), whose sum is σ = 834453203136. Its totient is φ = 828576771564.

The previous prime is 831514987339. The next prime is 831514987393. The reversal of 831514987349 is 943789415138.

831514987349 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 831514987349 - 2²⁸ = 831246551893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 831514987291 and 831514987300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831514987339) 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, 1469107469 + ... + 1469108034.

It is an arithmetic number, because the mean of its divisors is an integer number (208613300784).

Almost surely, 2^831514987349 is an apocalyptic number.

It is an amenable number.

831514987349 is a deficient number, since it is larger than the sum of its proper divisors (2938215787).

831514987349 is a wasteful number, since it uses less digits than its factorization.

831514987349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938215786.

The product of its digits is 26127360, while the sum is 62.

The spelling of 831514987349 in words is "eight hundred thirty-one billion, five hundred fourteen million, nine hundred eighty-seven thousand, three hundred forty-nine".