1135331321 has 4 divisors (see below), whose sum is σ = 1171954944. Its totient is φ = 1098707700.

The previous prime is 1135331303. The next prime is 1135331333. The reversal of 1135331321 is 1231335311.

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 an emirpimes, since its reverse is a distinct semiprime: 1231335311 = 73 ⋅16867607.

It is a cyclic number.

It is not a de Polignac number, because 1135331321 - 2⁶ = 1135331257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1135331371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18311765 + ... + 18311826.

It is an arithmetic number, because the mean of its divisors is an integer number (292988736).

Almost surely, 2^1135331321 is an apocalyptic number.

It is an amenable number.

1135331321 is a deficient number, since it is larger than the sum of its proper divisors (36623623).

1135331321 is an equidigital number, since it uses as much as digits as its factorization.

1135331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36623622.

The product of its digits is 810, while the sum is 23.

The square root of 1135331321 is about 33694.6779328724. The cubic root of 1135331321 is about 1043.2159209321.

Adding to 1135331321 its reverse (1231335311), we get a palindrome (2366666632).

The spelling of 1135331321 in words is "one billion, one hundred thirty-five million, three hundred thirty-one thousand, three hundred twenty-one".