1163236321 has 4 divisors (see below), whose sum is σ = 1252716052. Its totient is φ = 1073756592.

The previous prime is 1163236273. The next prime is 1163236357. The reversal of 1163236321 is 1236323611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1236323611 = 1229 ⋅1005959.

It can be written as a sum of positive squares in 2 ways, for example, as 555120721 + 608115600 = 23561^2 + 24660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163236321 - 2¹⁵ = 1163203553 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 1163236321.

It is not an unprimeable number, because it can be changed into a prime (1163236621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44739846 + ... + 44739871.

It is an arithmetic number, because the mean of its divisors is an integer number (313179013).

Almost surely, 2^1163236321 is an apocalyptic number.

It is an amenable number.

1163236321 is a deficient number, since it is larger than the sum of its proper divisors (89479731).

1163236321 is an equidigital number, since it uses as much as digits as its factorization.

1163236321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89479730.

The product of its digits is 3888, while the sum is 28.

The square root of 1163236321 is about 34106.2504682060. The cubic root of 1163236321 is about 1051.6938106750.

Adding to 1163236321 its reverse (1236323611), we get a palindrome (2399559932).

The spelling of 1163236321 in words is "one billion, one hundred sixty-three million, two hundred thirty-six thousand, three hundred twenty-one".