20743103 has 2 divisors, whose sum is σ = 20743104. Its totient is φ = 20743102.

The previous prime is 20743097. The next prime is 20743181. The reversal of 20743103 is 30134702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20743103 - 2⁶ = 20743039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20743603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10371551 + 10371552.

It is an arithmetic number, because the mean of its divisors is an integer number (10371552).

Almost surely, 2^20743103 is an apocalyptic number.

20743103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20743103 is an equidigital number, since it uses as much as digits as its factorization.

20743103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20743103 is about 4554.4596825529. The cubic root of 20743103 is about 274.7627838650.

Adding to 20743103 its reverse (30134702), we get a palindrome (50877805).

The spelling of 20743103 in words is "twenty million, seven hundred forty-three thousand, one hundred three".