831496009 has 2 divisors, whose sum is σ = 831496010. Its totient is φ = 831496008.

The previous prime is 831496007. The next prime is 831496067. The reversal of 831496009 is 900694138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825987600 + 5508409 = 28740^2 + 2347^2 .

It is a cyclic number.

It is not a de Polignac number, because 831496009 - 2¹ = 831496007 is a prime.

It is a super-2 number, since 2×831496009² = 1382771225965856162, which contains 22 as substring.

Together with 831496007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (831496007) 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 as a sum of consecutive naturals, namely, 415748004 + 415748005.

It is an arithmetic number, because the mean of its divisors is an integer number (415748005).

Almost surely, 2^831496009 is an apocalyptic number.

It is an amenable number.

831496009 is a deficient number, since it is larger than the sum of its proper divisors (1).

831496009 is an equidigital number, since it uses as much as digits as its factorization.

831496009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 831496009 is about 28835.6725081972. The cubic root of 831496009 is about 940.3439246258.

The spelling of 831496009 in words is "eight hundred thirty-one million, four hundred ninety-six thousand, nine".