831470141 has 4 divisors (see below), whose sum is σ = 831542172. Its totient is φ = 831398112.

The previous prime is 831470117. The next prime is 831470149. The reversal of 831470141 is 141074138.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 277056025 + 554414116 = 16645^2 + 23546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831470141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831470149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14360 + ... + 43233.

It is an arithmetic number, because the mean of its divisors is an integer number (207885543).

Almost surely, 2^831470141 is an apocalyptic number.

It is an amenable number.

831470141 is a deficient number, since it is larger than the sum of its proper divisors (72031).

831470141 is a wasteful number, since it uses less digits than its factorization.

831470141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72030.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 831470141 is about 28835.2239630630. The cubic root of 831470141 is about 940.3341730982.

The spelling of 831470141 in words is "eight hundred thirty-one million, four hundred seventy thousand, one hundred forty-one".