1304402312305 has 4 divisors (see below), whose sum is σ = 1565282774772. Its totient is φ = 1043521849840.

The previous prime is 1304402312249. The next prime is 1304402312309. The reversal of 1304402312305 is 5032132044031.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 544661712144 + 759740600161 = 738012^2 + 871631^2 .

It is not a de Polignac number, because 1304402312305 - 2²³ = 1304393923697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304402312309) 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, 130440231226 + ... + 130440231235.

It is an arithmetic number, because the mean of its divisors is an integer number (391320693693).

Almost surely, 2^{1304402312305} is an apocalyptic number.

It is an amenable number.

1304402312305 is a deficient number, since it is larger than the sum of its proper divisors (260880462467).

1304402312305 is an equidigital number, since it uses as much as digits as its factorization.

1304402312305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260880462466.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 1304402312305 its reverse (5032132044031), we get a palindrome (6336534356336).

The spelling of 1304402312305 in words is "one trillion, three hundred four billion, four hundred two million, three hundred twelve thousand, three hundred five".