13613502313 has 2 divisors, whose sum is σ = 13613502314. Its totient is φ = 13613502312.

The previous prime is 13613502257. The next prime is 13613502317. The reversal of 13613502313 is 31320531631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13080954384 + 532547929 = 114372^2 + 23077^2 .

It is a cyclic number.

It is not a de Polignac number, because 13613502313 - 2¹³ = 13613494121 is a prime.

It is not a weakly prime, because it can be changed into another prime (13613502317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6806751156 + 6806751157.

It is an arithmetic number, because the mean of its divisors is an integer number (6806751157).

Almost surely, 2^13613502313 is an apocalyptic number.

It is an amenable number.

13613502313 is a deficient number, since it is larger than the sum of its proper divisors (1).

13613502313 is an equidigital number, since it uses as much as digits as its factorization.

13613502313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 28.

The spelling of 13613502313 in words is "thirteen billion, six hundred thirteen million, five hundred two thousand, three hundred thirteen".