1320310427 has 2 divisors, whose sum is σ = 1320310428. Its totient is φ = 1320310426.

The previous prime is 1320310379. The next prime is 1320310477. The reversal of 1320310427 is 7240130231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320310427 - 2¹² = 1320306331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320310477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660155213 + 660155214.

It is an arithmetic number, because the mean of its divisors is an integer number (660155214).

Almost surely, 2^1320310427 is an apocalyptic number.

1320310427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320310427 is an equidigital number, since it uses as much as digits as its factorization.

1320310427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1320310427 is about 36336.0761090132. The cubic root of 1320310427 is about 1097.0472952638.

Adding to 1320310427 its reverse (7240130231), we get a palindrome (8560440658).

The spelling of 1320310427 in words is "one billion, three hundred twenty million, three hundred ten thousand, four hundred twenty-seven".