1320345601 has 8 divisors (see below), whose sum is σ = 1345851360. Its totient is φ = 1294944192.

The previous prime is 1320345599. The next prime is 1320345623. The reversal of 1320345601 is 1065430231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320345601 - 2¹ = 1320345599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320345641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295 + ... + 51388.

It is an arithmetic number, because the mean of its divisors is an integer number (168231420).

Almost surely, 2^1320345601 is an apocalyptic number.

It is an amenable number.

1320345601 is a deficient number, since it is larger than the sum of its proper divisors (25505759).

1320345601 is an equidigital number, since it uses as much as digits as its factorization.

1320345601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52175.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1320345601 is about 36336.5601151237. The cubic root of 1320345601 is about 1097.0570372149.

Adding to 1320345601 its reverse (1065430231), we get a palindrome (2385775832).

It can be divided in two parts, 1320 and 345601, that added together give a square (346921 = 589²).

The spelling of 1320345601 in words is "one billion, three hundred twenty million, three hundred forty-five thousand, six hundred one".