1301331013 has 4 divisors (see below), whose sum is σ = 1301751360. Its totient is φ = 1300910668.

The previous prime is 1301331001. The next prime is 1301331019. The reversal of 1301331013 is 3101331031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3101331031 = 19 ⋅163227949.

It is a cyclic number.

It is not a de Polignac number, because 1301331013 - 2²⁹ = 764460101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301331019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205495 + ... + 211732.

It is an arithmetic number, because the mean of its divisors is an integer number (325437840).

Almost surely, 2^1301331013 is an apocalyptic number.

It is an amenable number.

1301331013 is a deficient number, since it is larger than the sum of its proper divisors (420347).

1301331013 is an equidigital number, since it uses as much as digits as its factorization.

1301331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420346.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 1301331013 is about 36073.9658618234. The cubic root of 1301331013 is about 1091.7652324525.

Adding to 1301331013 its reverse (3101331031), we get a palindrome (4402662044).

The spelling of 1301331013 in words is "one billion, three hundred one million, three hundred thirty-one thousand, thirteen".