1996831 has 4 divisors (see below), whose sum is σ = 2001064. Its totient is φ = 1992600.

The previous prime is 1996829. The next prime is 1996849. The reversal of 1996831 is 1386991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1996831 - 2¹ = 1996829 is a prime.

It is a super-2 number, since 2×1996831² = 7974668085122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1305 + ... + 2386.

It is an arithmetic number, because the mean of its divisors is an integer number (500266).

2^1996831 is an apocalyptic number.

1996831 is a deficient number, since it is larger than the sum of its proper divisors (4233).

1996831 is an equidigital number, since it uses as much as digits as its factorization.

1996831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232.

The product of its digits is 11664, while the sum is 37.

The square root of 1996831 is about 1413.0927075037. The cubic root of 1996831 is about 125.9255249816.

The spelling of 1996831 in words is "one million, nine hundred ninety-six thousand, eight hundred thirty-one".