131240237641 has 2 divisors, whose sum is σ = 131240237642. Its totient is φ = 131240237640.

The previous prime is 131240237617. The next prime is 131240237657. The reversal of 131240237641 is 146732042131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130739373241 + 500864400 = 361579^2 + 22380^2 .

It is an emirp because it is prime and its reverse (146732042131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131240237641 - 2⁹ = 131240237129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131240237597 and 131240237606.

It is not a weakly prime, because it can be changed into another prime (131240237041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65620118820 + 65620118821.

It is an arithmetic number, because the mean of its divisors is an integer number (65620118821).

Almost surely, 2^131240237641 is an apocalyptic number.

It is an amenable number.

131240237641 is a deficient number, since it is larger than the sum of its proper divisors (1).

131240237641 is an equidigital number, since it uses as much as digits as its factorization.

131240237641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

Adding to 131240237641 its reverse (146732042131), we get a palindrome (277972279772).

The spelling of 131240237641 in words is "one hundred thirty-one billion, two hundred forty million, two hundred thirty-seven thousand, six hundred forty-one".