1005304431103 has 4 divisors (see below), whose sum is σ = 1148919349840. Its totient is φ = 861689512368.

The previous prime is 1005304431097. The next prime is 1005304431113. The reversal of 1005304431103 is 3011344035001.

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

It is a cyclic number.

It is not a de Polignac number, because 1005304431103 - 2¹⁷ = 1005304300031 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 (1005304431113) 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, 71807459358 + ... + 71807459371.

It is an arithmetic number, because the mean of its divisors is an integer number (287229837460).

Almost surely, 2^{1005304431103} is an apocalyptic number.

1005304431103 is a deficient number, since it is larger than the sum of its proper divisors (143614918737).

1005304431103 is an equidigital number, since it uses as much as digits as its factorization.

1005304431103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143614918736.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1005304431103 its reverse (3011344035001), we get a palindrome (4016648466104).

The spelling of 1005304431103 in words is "one trillion, five billion, three hundred four million, four hundred thirty-one thousand, one hundred three".