1320327331 has 2 divisors, whose sum is σ = 1320327332. Its totient is φ = 1320327330.

The previous prime is 1320327329. The next prime is 1320327343. The reversal of 1320327331 is 1337230231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320327331 - 2¹ = 1320327329 is a prime.

It is a super-2 number, since 2×1320327331² = 3486528521971167122, which contains 22 as substring.

Together with 1320327329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1320327296 and 1320327305.

It is not a weakly prime, because it can be changed into another prime (1320327301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660163665 + 660163666.

It is an arithmetic number, because the mean of its divisors is an integer number (660163666).

Almost surely, 2^1320327331 is an apocalyptic number.

1320327331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320327331 is an equidigital number, since it uses as much as digits as its factorization.

1320327331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 1320327331 is about 36336.3087145626. The cubic root of 1320327331 is about 1097.0519770942.

Adding to 1320327331 its reverse (1337230231), we get a palindrome (2657557562).

The spelling of 1320327331 in words is "one billion, three hundred twenty million, three hundred twenty-seven thousand, three hundred thirty-one".