1103243311 has 4 divisors (see below), whose sum is σ = 1104350872. Its totient is φ = 1102135752.

The previous prime is 1103243299. The next prime is 1103243321. The reversal of 1103243311 is 1133423011.

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 1103243311 - 2⁵ = 1103243279 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 (1103243321) 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, 552285 + ... + 554278.

It is an arithmetic number, because the mean of its divisors is an integer number (276087718).

Almost surely, 2^1103243311 is an apocalyptic number.

1103243311 is a deficient number, since it is larger than the sum of its proper divisors (1107561).

1103243311 is an equidigital number, since it uses as much as digits as its factorization.

1103243311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107560.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1103243311 is about 33215.1066685025. The cubic root of 1103243311 is about 1033.2936670749.

Adding to 1103243311 its reverse (1133423011), we get a palindrome (2236666322).

The spelling of 1103243311 in words is "one billion, one hundred three million, two hundred forty-three thousand, three hundred eleven".