131516203337 has 2 divisors, whose sum is σ = 131516203338. Its totient is φ = 131516203336.

The previous prime is 131516203333. The next prime is 131516203381. The reversal of 131516203337 is 733302615131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131312741641 + 203461696 = 362371^2 + 14264^2 .

It is a cyclic number.

It is not a de Polignac number, because 131516203337 - 2² = 131516203333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131516203297 and 131516203306.

It is not a weakly prime, because it can be changed into another prime (131516203333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65758101668 + 65758101669.

It is an arithmetic number, because the mean of its divisors is an integer number (65758101669).

Almost surely, 2^131516203337 is an apocalyptic number.

It is an amenable number.

131516203337 is a deficient number, since it is larger than the sum of its proper divisors (1).

131516203337 is an equidigital number, since it uses as much as digits as its factorization.

131516203337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 35.

Adding to 131516203337 its reverse (733302615131), we get a palindrome (864818818468).

The spelling of 131516203337 in words is "one hundred thirty-one billion, five hundred sixteen million, two hundred three thousand, three hundred thirty-seven".