1103505513 has 32 divisors (see below), whose sum is σ = 1702995840. Its totient is φ = 628162560.

The previous prime is 1103505499. The next prime is 1103505521. The reversal of 1103505513 is 3155053011.

It is not a de Polignac number, because 1103505513 - 2¹³ = 1103497321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1103505583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317481 + ... + 320937.

It is an arithmetic number, because the mean of its divisors is an integer number (53218620).

Almost surely, 2^1103505513 is an apocalyptic number.

It is an amenable number.

1103505513 is a deficient number, since it is larger than the sum of its proper divisors (599490327).

1103505513 is a wasteful number, since it uses less digits than its factorization.

1103505513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057.

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 1103505513 is about 33219.0534633364. The cubic root of 1103505513 is about 1033.3755197368.

Adding to 1103505513 its reverse (3155053011), we get a palindrome (4258558524).

The spelling of 1103505513 in words is "one billion, one hundred three million, five hundred five thousand, five hundred thirteen".