1300002001 has 4 divisors (see below), whose sum is σ = 1303180900. Its totient is φ = 1296823104.

The previous prime is 1300001971. The next prime is 1300002013. The reversal of 1300002001 is 1002000031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1082410000 + 217592001 = 32900^2 + 14751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1300002001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1300002061) 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 in 3 ways as a sum of consecutive naturals, for example, 1588836 + ... + 1589653.

It is an arithmetic number, because the mean of its divisors is an integer number (325795225).

Almost surely, 2^1300002001 is an apocalyptic number.

It is an amenable number.

1300002001 is a deficient number, since it is larger than the sum of its proper divisors (3178899).

1300002001 is an equidigital number, since it uses as much as digits as its factorization.

1300002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178898.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1300002001 is about 36055.5405035065. The cubic root of 1300002001 is about 1091.3934430293.

Adding to 1300002001 its reverse (1002000031), we get a palindrome (2302002032).

The spelling of 1300002001 in words is "one billion, three hundred million, two thousand, one".