1320813607 has 2 divisors, whose sum is σ = 1320813608. Its totient is φ = 1320813606.

The previous prime is 1320813577. The next prime is 1320813661. The reversal of 1320813607 is 7063180231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320813607 - 2¹¹ = 1320811559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320813677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660406803 + 660406804.

It is an arithmetic number, because the mean of its divisors is an integer number (660406804).

Almost surely, 2^1320813607 is an apocalyptic number.

1320813607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320813607 is an equidigital number, since it uses as much as digits as its factorization.

1320813607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1320813607 is about 36342.9994221721. Note that the first 3 decimals coincide. The cubic root of 1320813607 is about 1097.1866418236.

Adding to 1320813607 its reverse (7063180231), we get a palindrome (8383993838).

The spelling of 1320813607 in words is "one billion, three hundred twenty million, eight hundred thirteen thousand, six hundred seven".