1304320505340 has 48 divisors (see below), whose sum is σ = 3656535095808. Its totient is φ = 347396165184.

The previous prime is 1304320505333. The next prime is 1304320505419. The reversal of 1304320505340 is 435050234031.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1304320505298 and 1304320505307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13157592 + ... + 13256351.

It is an arithmetic number, because the mean of its divisors is an integer number (76177814496).

Almost surely, 2^{1304320505340} is an apocalyptic number.

1304320505340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304320505340 is an abundant number, since it is smaller than the sum of its proper divisors (2352214590468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1304320505340 is a wasteful number, since it uses less digits than its factorization.

1304320505340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26414778 (or 26414776 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 1304320505340 its reverse (435050234031), we get a palindrome (1739370739371).

The spelling of 1304320505340 in words is "one trillion, three hundred four billion, three hundred twenty million, five hundred five thousand, three hundred forty".