1996231 has 4 divisors (see below), whose sum is σ = 2038752. Its totient is φ = 1953712.

The previous prime is 1996229. The next prime is 1996237. The reversal of 1996231 is 1326991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1326991 = 563 ⋅2357.

It is a cyclic number.

It is not a de Polignac number, because 1996231 - 2¹ = 1996229 is a prime.

It is a super-2 number, since 2×1996231² = 7969876410722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1996193 and 1996202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996237) 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, 21190 + ... + 21283.

It is an arithmetic number, because the mean of its divisors is an integer number (509688).

2^1996231 is an apocalyptic number.

1996231 is a deficient number, since it is larger than the sum of its proper divisors (42521).

1996231 is an equidigital number, since it uses as much as digits as its factorization.

1996231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42520.

The product of its digits is 2916, while the sum is 31.

The square root of 1996231 is about 1412.8803912575. The cubic root of 1996231 is about 125.9129111811.

The spelling of 1996231 in words is "one million, nine hundred ninety-six thousand, two hundred thirty-one".