3257520313 has 2 divisors, whose sum is σ = 3257520314. Its totient is φ = 3257520312.

The previous prime is 3257520311. The next prime is 3257520349. The reversal of 3257520313 is 3130257523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3163275049 + 94245264 = 56243^2 + 9708^2 .

It is a cyclic number.

It is not a de Polignac number, because 3257520313 - 2¹ = 3257520311 is a prime.

It is a super-2 number, since 2×3257520313² = 21222877179215235938, which contains 22 as substring.

Together with 3257520311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3257520311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628760156 + 1628760157.

It is an arithmetic number, because the mean of its divisors is an integer number (1628760157).

Almost surely, 2^3257520313 is an apocalyptic number.

It is an amenable number.

3257520313 is a deficient number, since it is larger than the sum of its proper divisors (1).

3257520313 is an equidigital number, since it uses as much as digits as its factorization.

3257520313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 3257520313 is about 57074.6906518117. The cubic root of 3257520313 is about 1482.3896616767.

Adding to 3257520313 its reverse (3130257523), we get a palindrome (6387777836).

The spelling of 3257520313 in words is "three billion, two hundred fifty-seven million, five hundred twenty thousand, three hundred thirteen".