131360261 has 2 divisors, whose sum is σ = 131360262. Its totient is φ = 131360260.

The previous prime is 131360231. The next prime is 131360311. The reversal of 131360261 is 162063131.

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., 110145025 + 21215236 = 10495^2 + 4606^2 .

It is a cyclic number.

It is not a de Polignac number, because 131360261 - 2¹⁰ = 131359237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131360221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65680130 + 65680131.

It is an arithmetic number, because the mean of its divisors is an integer number (65680131).

Almost surely, 2^131360261 is an apocalyptic number.

It is an amenable number.

131360261 is a deficient number, since it is larger than the sum of its proper divisors (1).

131360261 is an equidigital number, since it uses as much as digits as its factorization.

131360261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 131360261 is about 11461.2504117134. The cubic root of 131360261 is about 508.3404482626.

The spelling of 131360261 in words is "one hundred thirty-one million, three hundred sixty thousand, two hundred sixty-one".