1131115321 has 16 divisors (see below), whose sum is σ = 1392427008. Its totient is φ = 897454800.

The previous prime is 1131115319. The next prime is 1131115327. The reversal of 1131115321 is 1235111311.

It is a cyclic number.

It is not a de Polignac number, because 1131115321 - 2¹ = 1131115319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131115327) 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 15 ways as a sum of consecutive naturals, for example, 108325 + ... + 118306.

It is an arithmetic number, because the mean of its divisors is an integer number (87026688).

Almost surely, 2^1131115321 is an apocalyptic number.

It is an amenable number.

1131115321 is a deficient number, since it is larger than the sum of its proper divisors (261311687).

1131115321 is a wasteful number, since it uses less digits than its factorization.

1131115321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226692.

The product of its digits is 90, while the sum is 19.

The square root of 1131115321 is about 33632.0579358445. The cubic root of 1131115321 is about 1041.9230079680.

Adding to 1131115321 its reverse (1235111311), we get a palindrome (2366226632).

The spelling of 1131115321 in words is "one billion, one hundred thirty-one million, one hundred fifteen thousand, three hundred twenty-one".