1301011321 has 4 divisors (see below), whose sum is σ = 1310507892. Its totient is φ = 1291514752.

The previous prime is 1301011297. The next prime is 1301011337. The reversal of 1301011321 is 1231101031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1231101031 = 907 ⋅1357333.

It can be written as a sum of positive squares in 2 ways, for example, as 708624400 + 592386921 = 26620^2 + 24339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301011321 - 2⁵ = 1301011289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4748080 + ... + 4748353.

It is an arithmetic number, because the mean of its divisors is an integer number (327626973).

Almost surely, 2^1301011321 is an apocalyptic number.

It is an amenable number.

1301011321 is a deficient number, since it is larger than the sum of its proper divisors (9496571).

1301011321 is an equidigital number, since it uses as much as digits as its factorization.

1301011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9496570.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1301011321 is about 36069.5345270770. The cubic root of 1301011321 is about 1091.6758221506.

Adding to 1301011321 its reverse (1231101031), we get a palindrome (2532112352).

The spelling of 1301011321 in words is "one billion, three hundred one million, eleven thousand, three hundred twenty-one".