131270681 has 2 divisors, whose sum is σ = 131270682. Its totient is φ = 131270680.

The previous prime is 131270653. The next prime is 131270707. The reversal of 131270681 is 186072131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78925456 + 52345225 = 8884^2 + 7235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131270681 is a prime.

It is a super-2 number, since 2×131270681² = 34463983380407522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131270081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65635340 + 65635341.

It is an arithmetic number, because the mean of its divisors is an integer number (65635341).

Almost surely, 2^131270681 is an apocalyptic number.

It is an amenable number.

131270681 is a deficient number, since it is larger than the sum of its proper divisors (1).

131270681 is an equidigital number, since it uses as much as digits as its factorization.

131270681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 131270681 is about 11457.3417946747. The cubic root of 131270681 is about 508.2248691872.

The spelling of 131270681 in words is "one hundred thirty-one million, two hundred seventy thousand, six hundred eighty-one".