20481323 has 2 divisors, whose sum is σ = 20481324. Its totient is φ = 20481322.

The previous prime is 20481317. The next prime is 20481341. The reversal of 20481323 is 32318402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20481323 - 2⁸ = 20481067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20481023) 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, 10240661 + 10240662.

It is an arithmetic number, because the mean of its divisors is an integer number (10240662).

Almost surely, 2^20481323 is an apocalyptic number.

20481323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20481323 is an equidigital number, since it uses as much as digits as its factorization.

20481323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20481323 is about 4525.6295694632. The cubic root of 20481323 is about 273.6020427429.

Adding to 20481323 its reverse (32318402), we get a palindrome (52799725).

The spelling of 20481323 in words is "twenty million, four hundred eighty-one thousand, three hundred twenty-three".