131243141 has 2 divisors, whose sum is σ = 131243142. Its totient is φ = 131243140.

The previous prime is 131243117. The next prime is 131243153. The reversal of 131243141 is 141342131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112572100 + 18671041 = 10610^2 + 4321^2 .

It is a cyclic number.

It is not a de Polignac number, because 131243141 - 2²⁶ = 64134277 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131243171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65621570 + 65621571.

It is an arithmetic number, because the mean of its divisors is an integer number (65621571).

Almost surely, 2^131243141 is an apocalyptic number.

It is an amenable number.

131243141 is a deficient number, since it is larger than the sum of its proper divisors (1).

131243141 is an equidigital number, since it uses as much as digits as its factorization.

131243141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 131243141 is about 11456.1398821767. The cubic root of 131243141 is about 508.1893256023.

Adding to 131243141 its reverse (141342131), we get a palindrome (272585272).

The spelling of 131243141 in words is "one hundred thirty-one million, two hundred forty-three thousand, one hundred forty-one".