20320103 has 2 divisors, whose sum is σ = 20320104. Its totient is φ = 20320102.

The previous prime is 20320073. The next prime is 20320171. The reversal of 20320103 is 30102302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20320103 - 2¹⁴ = 20303719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20320303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160051 + 10160052.

It is an arithmetic number, because the mean of its divisors is an integer number (10160052).

Almost surely, 2^20320103 is an apocalyptic number.

20320103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320103 is an equidigital number, since it uses as much as digits as its factorization.

20320103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20320103 is about 4507.7824925344. The cubic root of 20320103 is about 272.8822590217.

Adding to 20320103 its reverse (30102302), we get a palindrome (50422405).

The spelling of 20320103 in words is "twenty million, three hundred twenty thousand, one hundred three".