131355241 has 2 divisors, whose sum is σ = 131355242. Its totient is φ = 131355240.

The previous prime is 131355223. The next prime is 131355281. The reversal of 131355241 is 142553131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127238400 + 4116841 = 11280^2 + 2029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131355241 is a prime.

It is not a weakly prime, because it can be changed into another prime (131355281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65677620 + 65677621.

It is an arithmetic number, because the mean of its divisors is an integer number (65677621).

Almost surely, 2^131355241 is an apocalyptic number.

It is an amenable number.

131355241 is a deficient number, since it is larger than the sum of its proper divisors (1).

131355241 is an equidigital number, since it uses as much as digits as its factorization.

131355241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 131355241 is about 11461.0314108286. The cubic root of 131355241 is about 508.3339726828. Note that the first 3 decimals are identical.

The spelling of 131355241 in words is "one hundred thirty-one million, three hundred fifty-five thousand, two hundred forty-one".