1013320443243 has 16 divisors (see below), whose sum is σ = 1352526739200. Its totient is φ = 674830737120.

The previous prime is 1013320443241. The next prime is 1013320443329. The reversal of 1013320443243 is 3423440233101.

It is a happy number.

It is not a de Polignac number, because 1013320443243 - 2¹ = 1013320443241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1013320443243.

It is not an unprimeable number, because it can be changed into a prime (1013320443241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28224778 + ... + 28260656.

It is an arithmetic number, because the mean of its divisors is an integer number (84532921200).

Almost surely, 2^{1013320443243} is an apocalyptic number.

1013320443243 is a deficient number, since it is larger than the sum of its proper divisors (339206295957).

1013320443243 is a wasteful number, since it uses less digits than its factorization.

1013320443243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45602.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1013320443243 its reverse (3423440233101), we get a palindrome (4436760676344).

The spelling of 1013320443243 in words is "one trillion, thirteen billion, three hundred twenty million, four hundred forty-three thousand, two hundred forty-three".