131303232333281 has 2 divisors, whose sum is σ = 131303232333282. Its totient is φ = 131303232333280.

The previous prime is 131303232333089. The next prime is 131303232333283. The reversal of 131303232333281 is 182333232303131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69382386092881 + 61920846240400 = 8329609^2 + 7868980^2 .

It is a cyclic number.

It is not a de Polignac number, because 131303232333281 - 2¹⁴ = 131303232316897 is a prime.

It is a super-2 number, since 2×131303232333281² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 131303232333283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (131303232333283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65651616166640 + 65651616166641.

It is an arithmetic number, because the mean of its divisors is an integer number (65651616166641).

Almost surely, 2^{131303232333281} is an apocalyptic number.

It is an amenable number.

131303232333281 is a deficient number, since it is larger than the sum of its proper divisors (1).

131303232333281 is an equidigital number, since it uses as much as digits as its factorization.

131303232333281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 131303232333281 in words is "one hundred thirty-one trillion, three hundred three billion, two hundred thirty-two million, three hundred thirty-three thousand, two hundred eighty-one".