1301512321 has 2 divisors, whose sum is σ = 1301512322. Its totient is φ = 1301512320.

The previous prime is 1301512301. The next prime is 1301512327. The reversal of 1301512321 is 1232151031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146161025 + 155351296 = 33855^2 + 12464^2 .

It is an emirp because it is prime and its reverse (1232151031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301512321 - 2¹³ = 1301504129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301512327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650756160 + 650756161.

It is an arithmetic number, because the mean of its divisors is an integer number (650756161).

Almost surely, 2^1301512321 is an apocalyptic number.

It is an amenable number.

1301512321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301512321 is an equidigital number, since it uses as much as digits as its factorization.

1301512321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1301512321 is about 36076.4787777300. The cubic root of 1301512321 is about 1091.8159335107.

Adding to 1301512321 its reverse (1232151031), we get a palindrome (2533663352).

The spelling of 1301512321 in words is "one billion, three hundred one million, five hundred twelve thousand, three hundred twenty-one".