1223003 has 2 divisors, whose sum is σ = 1223004. Its totient is φ = 1223002.

The previous prime is 1222993. The next prime is 1223021. The reversal of 1223003 is 3003221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223003 - 2¹⁴ = 1206619 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1223083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611501 + 611502.

It is an arithmetic number, because the mean of its divisors is an integer number (611502).

2^1223003 is an apocalyptic number.

1223003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223003 is an equidigital number, since it uses as much as digits as its factorization.

1223003 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1223003 is about 1105.8946604447. The cubic root of 1223003 is about 106.9405731675.

Adding to 1223003 its reverse (3003221), we get a palindrome (4226224).

It can be divided in two parts, 122 and 3003, that added together give a 5-th power (3125 = 5⁵).

The spelling of 1223003 in words is "one million, two hundred twenty-three thousand, three".