131356720213 has 2 divisors, whose sum is σ = 131356720214. Its totient is φ = 131356720212.

The previous prime is 131356720211. The next prime is 131356720217. The reversal of 131356720213 is 312027653131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130077799569 + 1278920644 = 360663^2 + 35762^2 .

It is a cyclic number.

It is not a de Polignac number, because 131356720213 - 2¹ = 131356720211 is a prime.

Together with 131356720211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131356720211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65678360106 + 65678360107.

It is an arithmetic number, because the mean of its divisors is an integer number (65678360107).

Almost surely, 2^131356720213 is an apocalyptic number.

It is an amenable number.

131356720213 is a deficient number, since it is larger than the sum of its proper divisors (1).

131356720213 is an equidigital number, since it uses as much as digits as its factorization.

131356720213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 131356720213 in words is "one hundred thirty-one billion, three hundred fifty-six million, seven hundred twenty thousand, two hundred thirteen".