1301812601 has 2 divisors, whose sum is σ = 1301812602. Its totient is φ = 1301812600.

The previous prime is 1301812597. The next prime is 1301812609. The reversal of 1301812601 is 1062181031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1138995001 + 162817600 = 33749^2 + 12760^2 .

It is an emirp because it is prime and its reverse (1062181031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301812601 - 2² = 1301812597 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301812609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650906300 + 650906301.

It is an arithmetic number, because the mean of its divisors is an integer number (650906301).

Almost surely, 2^1301812601 is an apocalyptic number.

It is an amenable number.

1301812601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301812601 is an equidigital number, since it uses as much as digits as its factorization.

1301812601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1301812601 is about 36080.6402520798. The cubic root of 1301812601 is about 1091.8998936016.

Adding to 1301812601 its reverse (1062181031), we get a palindrome (2363993632).

The spelling of 1301812601 in words is "one billion, three hundred one million, eight hundred twelve thousand, six hundred one".