131088281 has 2 divisors, whose sum is σ = 131088282. Its totient is φ = 131088280.

The previous prime is 131088227. The next prime is 131088319. The reversal of 131088281 is 182880131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121992025 + 9096256 = 11045^2 + 3016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131088281 is a prime.

It is a super-2 number, since 2×131088281² = 34368274831069922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131084281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65544140 + 65544141.

It is an arithmetic number, because the mean of its divisors is an integer number (65544141).

Almost surely, 2^131088281 is an apocalyptic number.

It is an amenable number.

131088281 is a deficient number, since it is larger than the sum of its proper divisors (1).

131088281 is an equidigital number, since it uses as much as digits as its factorization.

131088281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 131088281 is about 11449.3790661328. The cubic root of 131088281 is about 507.9893680479.

The spelling of 131088281 in words is "one hundred thirty-one million, eighty-eight thousand, two hundred eighty-one".