1023823 has 4 divisors (see below), whose sum is σ = 1027408. Its totient is φ = 1020240.

The previous prime is 1023821. The next prime is 1023833. The reversal of 1023823 is 3283201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3283201 = 67 ⋅49003.

It is a cyclic number.

It is not a de Polignac number, because 1023823 - 2¹ = 1023821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023821) 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, 1323 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (256852).

2^1023823 is an apocalyptic number.

1023823 is a deficient number, since it is larger than the sum of its proper divisors (3585).

1023823 is an equidigital number, since it uses as much as digits as its factorization.

1023823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1023823 is about 1011.8413907328. The cubic root of 1023823 is about 100.7878762084.

The spelling of 1023823 in words is "one million, twenty-three thousand, eight hundred twenty-three".