1113505105 has 4 divisors (see below), whose sum is σ = 1336206132. Its totient is φ = 890804080.

The previous prime is 1113505067. The next prime is 1113505147. The reversal of 1113505105 is 5015053111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5015053111 = 163 ⋅30767197.

It can be written as a sum of positive squares in 2 ways, for example, as 263607696 + 849897409 = 16236^2 + 29153^2 .

It is not a de Polignac number, because 1113505105 - 2¹³ = 1113496913 is a prime.

It is a super-2 number, since 2×1113505105² = 2479787237722122050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111350506 + ... + 111350515.

It is an arithmetic number, because the mean of its divisors is an integer number (334051533).

Almost surely, 2^1113505105 is an apocalyptic number.

It is an amenable number.

1113505105 is a deficient number, since it is larger than the sum of its proper divisors (222701027).

1113505105 is an equidigital number, since it uses as much as digits as its factorization.

1113505105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222701026.

The product of its (nonzero) digits is 375, while the sum is 22.

The square root of 1113505105 is about 33369.2239196539. The cubic root of 1113505105 is about 1036.4875046072.

Adding to 1113505105 its reverse (5015053111), we get a palindrome (6128558216).

The spelling of 1113505105 in words is "one billion, one hundred thirteen million, five hundred five thousand, one hundred five".