131541811 has 2 divisors, whose sum is σ = 131541812. Its totient is φ = 131541810.

The previous prime is 131541779. The next prime is 131541827. The reversal of 131541811 is 118145131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131541811 - 2⁵ = 131541779 is a prime.

It is not a weakly prime, because it can be changed into another prime (131541881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65770905 + 65770906.

It is an arithmetic number, because the mean of its divisors is an integer number (65770906).

Almost surely, 2^131541811 is an apocalyptic number.

131541811 is a deficient number, since it is larger than the sum of its proper divisors (1).

131541811 is an equidigital number, since it uses as much as digits as its factorization.

131541811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 25.

The square root of 131541811 is about 11469.1678425246. The cubic root of 131541811 is about 508.5745290096.

Adding to 131541811 its reverse (118145131), we get a palindrome (249686942).

The spelling of 131541811 in words is "one hundred thirty-one million, five hundred forty-one thousand, eight hundred eleven".