131144261 has 2 divisors, whose sum is σ = 131144262. Its totient is φ = 131144260.

The previous prime is 131144201. The next prime is 131144267. The reversal of 131144261 is 162441131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71081761 + 60062500 = 8431^2 + 7750^2 .

It is a cyclic number.

It is not a de Polignac number, because 131144261 - 2¹⁴ = 131127877 is a prime.

It is a super-2 number, since 2×131144261² = 34397634386472242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131144267) 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, 65572130 + 65572131.

It is an arithmetic number, because the mean of its divisors is an integer number (65572131).

Almost surely, 2^131144261 is an apocalyptic number.

It is an amenable number.

131144261 is a deficient number, since it is larger than the sum of its proper divisors (1).

131144261 is an equidigital number, since it uses as much as digits as its factorization.

131144261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 131144261 is about 11451.8234792543. The cubic root of 131144261 is about 508.0616684285.

Adding to 131144261 its reverse (162441131), we get a palindrome (293585392).

The spelling of 131144261 in words is "one hundred thirty-one million, one hundred forty-four thousand, two hundred sixty-one".