1115321313 has 16 divisors (see below), whose sum is σ = 1559126016. Its totient is φ = 707839440.

The previous prime is 1115321297. The next prime is 1115321369. The reversal of 1115321313 is 3131235111.

1115321313 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1115321313 - 2⁴ = 1115321297 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115321313.

It is not an unprimeable number, because it can be changed into a prime (1115321393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23745 + ... + 52862.

It is an arithmetic number, because the mean of its divisors is an integer number (97445376).

Almost surely, 2^1115321313 is an apocalyptic number.

It is an amenable number.

1115321313 is a deficient number, since it is larger than the sum of its proper divisors (443804703).

1115321313 is a wasteful number, since it uses less digits than its factorization.

1115321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76844.

The product of its digits is 270, while the sum is 21.

The square root of 1115321313 is about 33396.4266501672. The cubic root of 1115321313 is about 1037.0507273920.

Adding to 1115321313 its reverse (3131235111), we get a palindrome (4246556424).

The spelling of 1115321313 in words is "one billion, one hundred fifteen million, three hundred twenty-one thousand, three hundred thirteen".