1001223103 has 4 divisors (see below), whose sum is σ = 1001920320. Its totient is φ = 1000525888.

The previous prime is 1001223079. The next prime is 1001223121. The reversal of 1001223103 is 3013221001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001223103 - 2¹³ = 1001214911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001223133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346450 + ... + 349327.

It is an arithmetic number, because the mean of its divisors is an integer number (250480080).

Almost surely, 2^1001223103 is an apocalyptic number.

1001223103 is a deficient number, since it is larger than the sum of its proper divisors (697217).

1001223103 is an equidigital number, since it uses as much as digits as its factorization.

1001223103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697216.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1001223103 is about 31642.1096483784. The cubic root of 1001223103 is about 1000.4075348927.

Adding to 1001223103 its reverse (3013221001), we get a palindrome (4014444104).

The spelling of 1001223103 in words is "one billion, one million, two hundred twenty-three thousand, one hundred three".