1103203311 has 16 divisors (see below), whose sum is σ = 1681536000. Its totient is φ = 630227808.

The previous prime is 1103203271. The next prime is 1103203333. The reversal of 1103203311 is 1133023011.

It is not a de Polignac number, because 1103203311 - 2⁹ = 1103202799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103203351) 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, 142365 + ... + 149913.

It is an arithmetic number, because the mean of its divisors is an integer number (105096000).

Almost surely, 2^1103203311 is an apocalyptic number.

1103203311 is a deficient number, since it is larger than the sum of its proper divisors (578332689).

1103203311 is an equidigital number, since it uses as much as digits as its factorization.

1103203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14518.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1103203311 is about 33214.5045273898. The cubic root of 1103203311 is about 1033.2811789725.

Adding to 1103203311 its reverse (1133023011), we get a palindrome (2236226322).

The spelling of 1103203311 in words is "one billion, one hundred three million, two hundred three thousand, three hundred eleven".