1123001003 has 8 divisors (see below), whose sum is σ = 1140414672. Its totient is φ = 1105606656.

The previous prime is 1123000999. The next prime is 1123001027. The reversal of 1123001003 is 3001003211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123001003 - 2² = 1123000999 is a prime.

It is a super-2 number, since 2×1123001003² = 2522262505478012018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123001303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150251 + ... + 157547.

It is an arithmetic number, because the mean of its divisors is an integer number (142551834).

Almost surely, 2^1123001003 is an apocalyptic number.

1123001003 is a deficient number, since it is larger than the sum of its proper divisors (17413669).

1123001003 is an equidigital number, since it uses as much as digits as its factorization.

1123001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9661.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1123001003 is about 33511.2071253782. The cubic root of 1123001003 is about 1039.4255342565.

Adding to 1123001003 its reverse (3001003211), we get a palindrome (4124004214).

The spelling of 1123001003 in words is "one billion, one hundred twenty-three million, one thousand, three".