20923003 has 2 divisors, whose sum is σ = 20923004. Its totient is φ = 20923002.

The previous prime is 20922991. The next prime is 20923033. The reversal of 20923003 is 30032902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20923003 - 2⁹ = 20922491 is a prime.

It is not a weakly prime, because it can be changed into another prime (20923033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10461501 + 10461502.

It is an arithmetic number, because the mean of its divisors is an integer number (10461502).

Almost surely, 2^20923003 is an apocalyptic number.

20923003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20923003 is an equidigital number, since it uses as much as digits as its factorization.

20923003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 20923003 is about 4574.1669186858. The cubic root of 20923003 is about 275.5548159871.

Adding to 20923003 its reverse (30032902), we get a palindrome (50955905).

The spelling of 20923003 in words is "twenty million, nine hundred twenty-three thousand, three".