1115411223 has 4 divisors (see below), whose sum is σ = 1487214968. Its totient is φ = 743607480.

The previous prime is 1115411189. The next prime is 1115411237. The reversal of 1115411223 is 3221145111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1115411223 - 2²⁰ = 1114362647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115411223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115411623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185901868 + ... + 185901873.

It is an arithmetic number, because the mean of its divisors is an integer number (371803742).

Almost surely, 2^1115411223 is an apocalyptic number.

1115411223 is a deficient number, since it is larger than the sum of its proper divisors (371803745).

1115411223 is an equidigital number, since it uses as much as digits as its factorization.

1115411223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371803744.

The product of its digits is 240, while the sum is 21.

The square root of 1115411223 is about 33397.7727251384. The cubic root of 1115411223 is about 1037.0785934202.

Adding to 1115411223 its reverse (3221145111), we get a palindrome (4336556334).

The spelling of 1115411223 in words is "one billion, one hundred fifteen million, four hundred eleven thousand, two hundred twenty-three".