1623203 has 2 divisors, whose sum is σ = 1623204. Its totient is φ = 1623202.

The previous prime is 1623197. The next prime is 1623229. The reversal of 1623203 is 3023261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1623203 - 2⁸ = 1622947 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1623233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811601 + 811602.

It is an arithmetic number, because the mean of its divisors is an integer number (811602).

2^1623203 is an apocalyptic number.

1623203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623203 is an equidigital number, since it uses as much as digits as its factorization.

1623203 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1623203 is about 1274.0498420392. The cubic root of 1623203 is about 117.5233814946.

Adding to 1623203 its reverse (3023261), we get a palindrome (4646464).

The spelling of 1623203 in words is "one million, six hundred twenty-three thousand, two hundred three".