1000340040443 has 4 divisors (see below), whose sum is σ = 1000425558600. Its totient is φ = 1000254522288.

The previous prime is 1000340040383. The next prime is 1000340040457. The reversal of 1000340040443 is 3440400430001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000340040443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000340040743) 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, 42741530 + ... + 42764927.

It is an arithmetic number, because the mean of its divisors is an integer number (250106389650).

Almost surely, 2^{1000340040443} is an apocalyptic number.

1000340040443 is a deficient number, since it is larger than the sum of its proper divisors (85518157).

1000340040443 is an equidigital number, since it uses as much as digits as its factorization.

1000340040443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85518156.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 1000340040443 its reverse (3440400430001), we get a palindrome (4440740470444).

The spelling of 1000340040443 in words is "one trillion, three hundred forty million, forty thousand, four hundred forty-three".