1103111001 has 8 divisors (see below), whose sum is σ = 1634238560. Its totient is φ = 735407316.

The previous prime is 1103110997. The next prime is 1103111003. The reversal of 1103111001 is 1001113011.

It is not a de Polignac number, because 1103111001 - 2² = 1103110997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1103111003) 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 in 7 ways as a sum of consecutive naturals, for example, 20427955 + ... + 20428008.

It is an arithmetic number, because the mean of its divisors is an integer number (204279820).

Almost surely, 2^1103111001 is an apocalyptic number.

It is an amenable number.

1103111001 is a deficient number, since it is larger than the sum of its proper divisors (531127559).

1103111001 is an equidigital number, since it uses as much as digits as its factorization.

1103111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40855972 (or 40855966 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 1103111001 is about 33213.1148945714. The cubic root of 1103111001 is about 1033.2523584021.

Adding to 1103111001 its reverse (1001113011), we get a palindrome (2104224012).

The spelling of 1103111001 in words is "one billion, one hundred three million, one hundred eleven thousand, one".