1161302321 has 8 divisors (see below), whose sum is σ = 1167566400. Its totient is φ = 1155053200.

The previous prime is 1161302309. The next prime is 1161302353. The reversal of 1161302321 is 1232031611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161302321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1161302293 and 1161302302.

It is not an unprimeable number, because it can be changed into a prime (1161302371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173996 + ... + 180546.

It is an arithmetic number, because the mean of its divisors is an integer number (145945800).

Almost surely, 2^1161302321 is an apocalyptic number.

It is an amenable number.

1161302321 is a deficient number, since it is larger than the sum of its proper divisors (6264079).

1161302321 is an equidigital number, since it uses as much as digits as its factorization.

1161302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1161302321 is about 34077.8860993460. The cubic root of 1161302321 is about 1051.1106376582.

Adding to 1161302321 its reverse (1232031611), we get a palindrome (2393333932).

The spelling of 1161302321 in words is "one billion, one hundred sixty-one million, three hundred two thousand, three hundred twenty-one".