1195318321 has 4 divisors (see below), whose sum is σ = 1196153892. Its totient is φ = 1194482752.

The previous prime is 1195318309. The next prime is 1195318403. The reversal of 1195318321 is 1238135911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 808606096 + 386712225 = 28436^2 + 19665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1195318321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1195318921) 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, 415636 + ... + 418501.

It is an arithmetic number, because the mean of its divisors is an integer number (299038473).

Almost surely, 2^1195318321 is an apocalyptic number.

It is an amenable number.

1195318321 is a deficient number, since it is larger than the sum of its proper divisors (835571).

1195318321 is an equidigital number, since it uses as much as digits as its factorization.

1195318321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835570.

The product of its digits is 6480, while the sum is 34.

The square root of 1195318321 is about 34573.3758982255. The cubic root of 1195318321 is about 1061.2748163433.

The spelling of 1195318321 in words is "one billion, one hundred ninety-five million, three hundred eighteen thousand, three hundred twenty-one".