131453920261 has 2 divisors, whose sum is σ = 131453920262. Its totient is φ = 131453920260.

The previous prime is 131453920223. The next prime is 131453920267. The reversal of 131453920261 is 162029354131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83293423236 + 48160497025 = 288606^2 + 219455^2 .

It is a cyclic number.

It is not a de Polignac number, because 131453920261 - 2²⁵ = 131420365829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131453920261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131453920267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65726960130 + 65726960131.

It is an arithmetic number, because the mean of its divisors is an integer number (65726960131).

Almost surely, 2^131453920261 is an apocalyptic number.

It is an amenable number.

131453920261 is a deficient number, since it is larger than the sum of its proper divisors (1).

131453920261 is an equidigital number, since it uses as much as digits as its factorization.

131453920261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 131453920261 in words is "one hundred thirty-one billion, four hundred fifty-three million, nine hundred twenty thousand, two hundred sixty-one".