1123553113 has 4 divisors (see below), whose sum is σ = 1123622928. Its totient is φ = 1123483300.

The previous prime is 1123553111. The next prime is 1123553141. The reversal of 1123553113 is 3113553211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1123553113 - 2¹ = 1123553111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123553111) 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, 2838 + ... + 47488.

It is an arithmetic number, because the mean of its divisors is an integer number (280905732).

Almost surely, 2^1123553113 is an apocalyptic number.

It is an amenable number.

1123553113 is a deficient number, since it is larger than the sum of its proper divisors (69815).

1123553113 is an equidigital number, since it uses as much as digits as its factorization.

1123553113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69814.

The product of its digits is 1350, while the sum is 25.

The square root of 1123553113 is about 33519.4438050514. The cubic root of 1123553113 is about 1039.5958467226.

It can be divided in two parts, 112 and 3553113, that added together give a square (3553225 = 1885²).

The spelling of 1123553113 in words is "one billion, one hundred twenty-three million, five hundred fifty-three thousand, one hundred thirteen".