1306320540404 has 72 divisors (see below), whose sum is σ = 2601007951080. Its totient is φ = 572957763840.

The previous prime is 1306320540383. The next prime is 1306320540449. The reversal of 1306320540404 is 4040450236031.

It can be written as a sum of positive squares in 4 ways, for example, as 118769836900 + 1187550703504 = 344630^2 + 1089748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23735462 + ... + 23790434.

Almost surely, 2^{1306320540404} is an apocalyptic number.

It is an amenable number.

1306320540404 is a deficient number, since it is larger than the sum of its proper divisors (1294687410676).

1306320540404 is a wasteful number, since it uses less digits than its factorization.

1306320540404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56721 (or 56708 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 1306320540404 its reverse (4040450236031), we get a palindrome (5346770776435).

The spelling of 1306320540404 in words is "one trillion, three hundred six billion, three hundred twenty million, five hundred forty thousand, four hundred four".