13520245313 has 2 divisors, whose sum is σ = 13520245314. Its totient is φ = 13520245312.

The previous prime is 13520245307. The next prime is 13520245379. The reversal of 13520245313 is 31354202531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10602409024 + 2917836289 = 102968^2 + 54017^2 .

It is a cyclic number.

It is not a de Polignac number, because 13520245313 - 2²⁶ = 13453136449 is a prime.

It is not a weakly prime, because it can be changed into another prime (13520245513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760122656 + 6760122657.

It is an arithmetic number, because the mean of its divisors is an integer number (6760122657).

Almost surely, 2^13520245313 is an apocalyptic number.

It is an amenable number.

13520245313 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520245313 is an equidigital number, since it uses as much as digits as its factorization.

13520245313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 13520245313 its reverse (31354202531), we get a palindrome (44874447844).

The spelling of 13520245313 in words is "thirteen billion, five hundred twenty million, two hundred forty-five thousand, three hundred thirteen".