1304402312309 has 2 divisors, whose sum is σ = 1304402312310. Its totient is φ = 1304402312308.

The previous prime is 1304402312249. The next prime is 1304402312321. The reversal of 1304402312309 is 9032132044031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088312141284 + 216090171025 = 1043222^2 + 464855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304402312309 - 2⁸ = 1304402312053 is a prime.

It is a super-2 number, since 2×1304402312309² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304402314309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652201156154 + 652201156155.

It is an arithmetic number, because the mean of its divisors is an integer number (652201156155).

Almost surely, 2^{1304402312309} is an apocalyptic number.

It is an amenable number.

1304402312309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304402312309 is an equidigital number, since it uses as much as digits as its factorization.

1304402312309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 1304402312309 in words is "one trillion, three hundred four billion, four hundred two million, three hundred twelve thousand, three hundred nine".