131056452281 has 2 divisors, whose sum is σ = 131056452282. Its totient is φ = 131056452280.

The previous prime is 131056452239. The next prime is 131056452347. The reversal of 131056452281 is 182254650131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83689282681 + 47367169600 = 289291^2 + 217640^2 .

It is an emirp because it is prime and its reverse (182254650131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131056452281 - 2¹⁰ = 131056451257 is a prime.

It is a super-2 number, since 2×131056452281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131056452211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65528226140 + 65528226141.

It is an arithmetic number, because the mean of its divisors is an integer number (65528226141).

Almost surely, 2^131056452281 is an apocalyptic number.

It is an amenable number.

131056452281 is a deficient number, since it is larger than the sum of its proper divisors (1).

131056452281 is an equidigital number, since it uses as much as digits as its factorization.

131056452281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 131056452281 in words is "one hundred thirty-one billion, fifty-six million, four hundred fifty-two thousand, two hundred eighty-one".