131021310137 has 2 divisors, whose sum is σ = 131021310138. Its totient is φ = 131021310136.

The previous prime is 131021310097. The next prime is 131021310139. The reversal of 131021310137 is 731013120131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130560091561 + 461218576 = 361331^2 + 21476^2 .

It is a cyclic number.

It is not a de Polignac number, because 131021310137 - 2¹² = 131021306041 is a prime.

Together with 131021310139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131021310139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510655068 + 65510655069.

It is an arithmetic number, because the mean of its divisors is an integer number (65510655069).

Almost surely, 2^131021310137 is an apocalyptic number.

It is an amenable number.

131021310137 is a deficient number, since it is larger than the sum of its proper divisors (1).

131021310137 is an equidigital number, since it uses as much as digits as its factorization.

131021310137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

Adding to 131021310137 its reverse (731013120131), we get a palindrome (862034430268).

The spelling of 131021310137 in words is "one hundred thirty-one billion, twenty-one million, three hundred ten thousand, one hundred thirty-seven".