831161742 has 16 divisors (see below), whose sum is σ = 1662833280. Its totient is φ = 276968952.

The previous prime is 831161731. The next prime is 831161761. The reversal of 831161742 is 247161138.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893 + ... + 40815.

It is an arithmetic number, because the mean of its divisors is an integer number (103927080).

Almost surely, 2^831161742 is an apocalyptic number.

831161742 is an abundant number, since it is smaller than the sum of its proper divisors (831671538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

831161742 is a wasteful number, since it uses less digits than its factorization.

831161742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42487.

The product of its digits is 8064, while the sum is 33.

The square root of 831161742 is about 28829.8758582135. The cubic root of 831161742 is about 940.2178995381.

The spelling of 831161742 in words is "eight hundred thirty-one million, one hundred sixty-one thousand, seven hundred forty-two".