4020323 has 2 divisors, whose sum is σ = 4020324. Its totient is φ = 4020322.

The previous prime is 4020307. The next prime is 4020349. The reversal of 4020323 is 3230204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4020323 - 2⁴ = 4020307 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 4020298 and 4020307.

It is not a weakly prime, because it can be changed into another prime (4020353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010161 + 2010162.

It is an arithmetic number, because the mean of its divisors is an integer number (2010162).

Almost surely, 2^4020323 is an apocalyptic number.

4020323 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020323 is an equidigital number, since it uses as much as digits as its factorization.

4020323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 4020323 is about 2005.0743128373. The cubic root of 4020323 is about 159.0084907719.

Adding to 4020323 its reverse (3230204), we get a palindrome (7250527).

The spelling of 4020323 in words is "four million, twenty thousand, three hundred twenty-three".