3205730313 has 6 divisors (see below), whose sum is σ = 4630499354. Its totient is φ = 2137153536.

The previous prime is 3205730303. The next prime is 3205730321. The reversal of 3205730313 is 3130375023.

It can be written as a sum of positive squares in only one way, i.e., 2423297529 + 782432784 = 49227^2 + 27972^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3205730313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3205730303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178096120 + ... + 178096137.

Almost surely, 2^3205730313 is an apocalyptic number.

It is an amenable number.

3205730313 is a deficient number, since it is larger than the sum of its proper divisors (1424769041).

3205730313 is a wasteful number, since it uses less digits than its factorization.

3205730313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356192263 (or 356192260 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 27.

The square root of 3205730313 is about 56619.1691302513. The cubic root of 3205730313 is about 1474.4916854978.

The spelling of 3205730313 in words is "three billion, two hundred five million, seven hundred thirty thousand, three hundred thirteen".