13020020131361 has 2 divisors, whose sum is σ = 13020020131362. Its totient is φ = 13020020131360.

The previous prime is 13020020131357. The next prime is 13020020131399. The reversal of 13020020131361 is 16313102002031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9948567598225 + 3071452533136 = 3154135^2 + 1752556^2 .

It is a cyclic number.

It is not a de Polignac number, because 13020020131361 - 2² = 13020020131357 is a prime.

It is not a weakly prime, because it can be changed into another prime (13020020131861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510010065680 + 6510010065681.

It is an arithmetic number, because the mean of its divisors is an integer number (6510010065681).

Almost surely, 2^{13020020131361} is an apocalyptic number.

It is an amenable number.

13020020131361 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020020131361 is an equidigital number, since it uses as much as digits as its factorization.

13020020131361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13020020131361 its reverse (16313102002031), we get a palindrome (29333122133392).

The spelling of 13020020131361 in words is "thirteen trillion, twenty billion, twenty million, one hundred thirty-one thousand, three hundred sixty-one".