131203203361 has 2 divisors, whose sum is σ = 131203203362. Its totient is φ = 131203203360.

The previous prime is 131203203293. The next prime is 131203203409. The reversal of 131203203361 is 163302302131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125515026961 + 5688176400 = 354281^2 + 75420^2 .

It is a cyclic number.

It is not a de Polignac number, because 131203203361 - 2²¹ = 131201106209 is a prime.

It is not a weakly prime, because it can be changed into another prime (131203203161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65601601680 + 65601601681.

It is an arithmetic number, because the mean of its divisors is an integer number (65601601681).

Almost surely, 2^131203203361 is an apocalyptic number.

It is an amenable number.

131203203361 is a deficient number, since it is larger than the sum of its proper divisors (1).

131203203361 is an equidigital number, since it uses as much as digits as its factorization.

131203203361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 131203203361 its reverse (163302302131), we get a palindrome (294505505492).

The spelling of 131203203361 in words is "one hundred thirty-one billion, two hundred three million, two hundred three thousand, three hundred sixty-one".