20623103 has 2 divisors, whose sum is σ = 20623104. Its totient is φ = 20623102.

The previous prime is 20623087. The next prime is 20623117. The reversal of 20623103 is 30132602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20623103 - 2⁴ = 20623087 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20623133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10311551 + 10311552.

It is an arithmetic number, because the mean of its divisors is an integer number (10311552).

Almost surely, 2^20623103 is an apocalyptic number.

20623103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20623103 is an equidigital number, since it uses as much as digits as its factorization.

20623103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20623103 is about 4541.2666735174. The cubic root of 20623103 is about 274.2319195432.

Adding to 20623103 its reverse (30132602), we get a palindrome (50755705).

The spelling of 20623103 in words is "twenty million, six hundred twenty-three thousand, one hundred three".