1301312443 has 4 divisors (see below), whose sum is σ = 1301389848. Its totient is φ = 1301235040.

The previous prime is 1301312431. The next prime is 1301312449. The reversal of 1301312443 is 3442131031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3442131031 = 6451 ⋅533581.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301312443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301312449) 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, 1678 + ... + 51043.

It is an arithmetic number, because the mean of its divisors is an integer number (325347462).

Almost surely, 2^1301312443 is an apocalyptic number.

1301312443 is a deficient number, since it is larger than the sum of its proper divisors (77405).

1301312443 is an equidigital number, since it uses as much as digits as its factorization.

1301312443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77404.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1301312443 is about 36073.7084730694. The cubic root of 1301312443 is about 1091.7600392627.

Adding to 1301312443 its reverse (3442131031), we get a palindrome (4743443474).

The spelling of 1301312443 in words is "one billion, three hundred one million, three hundred twelve thousand, four hundred forty-three".