1100043103 has 4 divisors (see below), whose sum is σ = 1147871088. Its totient is φ = 1052215120.

The previous prime is 1100043097. The next prime is 1100043121. The reversal of 1100043103 is 3013400011.

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 1100043103 - 2¹³ = 1100034911 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 (1100047103) 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, 23913958 + ... + 23914003.

It is an arithmetic number, because the mean of its divisors is an integer number (286967772).

Almost surely, 2^1100043103 is an apocalyptic number.

1100043103 is a deficient number, since it is larger than the sum of its proper divisors (47827985).

1100043103 is an equidigital number, since it uses as much as digits as its factorization.

1100043103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47827984.

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

The square root of 1100043103 is about 33166.8976993628. The cubic root of 1100043103 is about 1032.2935984226.

Adding to 1100043103 its reverse (3013400011), we get a palindrome (4113443114).

The spelling of 1100043103 in words is "one billion, one hundred million, forty-three thousand, one hundred three".