20040323 has 2 divisors, whose sum is σ = 20040324. Its totient is φ = 20040322.

The previous prime is 20040313. The next prime is 20040329. The reversal of 20040323 is 32304002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20040323 - 2⁶ = 20040259 is a prime.

It is a super-2 number, since 2×20040323² = 803229091888658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20040298 and 20040307.

It is not a weakly prime, because it can be changed into another prime (20040329) 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 as a sum of consecutive naturals, namely, 10020161 + 10020162.

It is an arithmetic number, because the mean of its divisors is an integer number (10020162).

Almost surely, 2^20040323 is an apocalyptic number.

20040323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040323 is an equidigital number, since it uses as much as digits as its factorization.

20040323 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20040323 is about 4476.6419334139. The cubic root of 20040323 is about 271.6240616356.

Adding to 20040323 its reverse (32304002), we get a palindrome (52344325).

The spelling of 20040323 in words is "twenty million, forty thousand, three hundred twenty-three".