1115411243 has 8 divisors (see below), whose sum is σ = 1181280768. Its totient is φ = 1050989544.

The previous prime is 1115411239. The next prime is 1115411249. The reversal of 1115411243 is 3421145111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115411243 - 2² = 1115411239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115411249) 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 7 ways as a sum of consecutive naturals, for example, 360371 + ... + 363452.

It is an arithmetic number, because the mean of its divisors is an integer number (147660096).

Almost surely, 2^1115411243 is an apocalyptic number.

1115411243 is a deficient number, since it is larger than the sum of its proper divisors (65869525).

1115411243 is an equidigital number, since it uses as much as digits as its factorization.

1115411243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723913.

The product of its digits is 480, while the sum is 23.

The square root of 1115411243 is about 33397.7730245596. The cubic root of 1115411243 is about 1037.0785996187.

Adding to 1115411243 its reverse (3421145111), we get a palindrome (4536556354).

The spelling of 1115411243 in words is "one billion, one hundred fifteen million, four hundred eleven thousand, two hundred forty-three".