1103143305 has 16 divisors (see below), whose sum is σ = 1925486784. Its totient is φ = 534857280.

The previous prime is 1103143303. The next prime is 1103143309. The reversal of 1103143305 is 5033413011.

It is not a de Polignac number, because 1103143305 - 2¹ = 1103143303 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1103143303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3342694 + ... + 3343023.

It is an arithmetic number, because the mean of its divisors is an integer number (120342924).

Almost surely, 2^1103143305 is an apocalyptic number.

1103143305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1103143305 is a deficient number, since it is larger than the sum of its proper divisors (822343479).

1103143305 is a wasteful number, since it uses less digits than its factorization.

1103143305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6685736.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1103143305 is about 33213.6012049281. The cubic root of 1103143305 is about 1033.2624443797.

Adding to 1103143305 its reverse (5033413011), we get a palindrome (6136556316).

The spelling of 1103143305 in words is "one billion, one hundred three million, one hundred forty-three thousand, three hundred five".