13023207817 has 2 divisors, whose sum is σ = 13023207818. Its totient is φ = 13023207816.

The previous prime is 13023207809. The next prime is 13023207889. The reversal of 13023207817 is 71870232031.

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., 12991668361 + 31539456 = 113981^2 + 5616^2 .

It is a cyclic number.

It is not a de Polignac number, because 13023207817 - 2³ = 13023207809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13023207217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6511603908 + 6511603909.

It is an arithmetic number, because the mean of its divisors is an integer number (6511603909).

Almost surely, 2^13023207817 is an apocalyptic number.

It is an amenable number.

13023207817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13023207817 is an equidigital number, since it uses as much as digits as its factorization.

13023207817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

Adding to 13023207817 its reverse (71870232031), we get a palindrome (84893439848).

The spelling of 13023207817 in words is "thirteen billion, twenty-three million, two hundred seven thousand, eight hundred seventeen".