1920323 has 4 divisors (see below), whose sum is σ = 1923168. Its totient is φ = 1917480.

The previous prime is 1920299. The next prime is 1920343. The reversal of 1920323 is 3230291.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3230291 = 1399 ⋅2309.

It is a cyclic number.

It is not a de Polignac number, because 1920323 - 2¹⁰ = 1919299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1920295 and 1920304.

It is not an unprimeable number, because it can be changed into a prime (1920343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233 + ... + 1973.

It is an arithmetic number, because the mean of its divisors is an integer number (480792).

2^1920323 is an apocalyptic number.

1920323 is a deficient number, since it is larger than the sum of its proper divisors (2845).

1920323 is a wasteful number, since it uses less digits than its factorization.

1920323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1920323 is about 1385.7571937392. The cubic root of 1920323 is about 124.2962695425.

The spelling of 1920323 in words is "one million, nine hundred twenty thousand, three hundred twenty-three".