131612137 has 2 divisors, whose sum is σ = 131612138. Its totient is φ = 131612136.

The previous prime is 131612111. The next prime is 131612149. The reversal of 131612137 is 731216131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77721856 + 53890281 = 8816^2 + 7341^2 .

It is a cyclic number.

It is not a de Polignac number, because 131612137 - 2¹⁵ = 131579369 is a prime.

It is not a weakly prime, because it can be changed into another prime (131612837) 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, 65806068 + 65806069.

It is an arithmetic number, because the mean of its divisors is an integer number (65806069).

Almost surely, 2^131612137 is an apocalyptic number.

It is an amenable number.

131612137 is a deficient number, since it is larger than the sum of its proper divisors (1).

131612137 is an equidigital number, since it uses as much as digits as its factorization.

131612137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 25.

The square root of 131612137 is about 11472.2333048104. The cubic root of 131612137 is about 508.6651456738.

Adding to 131612137 its reverse (731216131), we get a palindrome (862828268).

The spelling of 131612137 in words is "one hundred thirty-one million, six hundred twelve thousand, one hundred thirty-seven".