2123603 has 2 divisors, whose sum is σ = 2123604. Its totient is φ = 2123602.

The previous prime is 2123581. The next prime is 2123617. The reversal of 2123603 is 3063212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2123603 - 2²⁰ = 1075027 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061801 + 1061802.

It is an arithmetic number, because the mean of its divisors is an integer number (1061802).

2^2123603 is an apocalyptic number.

2123603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123603 is an equidigital number, since it uses as much as digits as its factorization.

2123603 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 2123603 is about 1457.2587278860. The cubic root of 2123603 is about 128.5359001774.

Adding to 2123603 its reverse (3063212), we get a palindrome (5186815).

The spelling of 2123603 in words is "two million, one hundred twenty-three thousand, six hundred three".