1320131227 has 2 divisors, whose sum is σ = 1320131228. Its totient is φ = 1320131226.

The previous prime is 1320131221. The next prime is 1320131287. The reversal of 1320131227 is 7221310231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320131227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320131198 and 1320131207.

It is not a weakly prime, because it can be changed into another prime (1320131221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660065613 + 660065614.

It is an arithmetic number, because the mean of its divisors is an integer number (660065614).

Almost surely, 2^1320131227 is an apocalyptic number.

1320131227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320131227 is an equidigital number, since it uses as much as digits as its factorization.

1320131227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1320131227 is about 36333.6101564378. The cubic root of 1320131227 is about 1096.9976605299.

Adding to 1320131227 its reverse (7221310231), we get a palindrome (8541441458).

The spelling of 1320131227 in words is "one billion, three hundred twenty million, one hundred thirty-one thousand, two hundred twenty-seven".