131115310250513 has 2 divisors, whose sum is σ = 131115310250514. Its totient is φ = 131115310250512.

The previous prime is 131115310250413. The next prime is 131115310250531. The reversal of 131115310250513 is 315052013511131.

Together with next prime (131115310250531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67661531789569 + 63453778460944 = 8225663^2 + 7965788^2 .

It is a cyclic number.

It is not a de Polignac number, because 131115310250513 - 2²² = 131115306056209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131115310250513.

It is not a weakly prime, because it can be changed into another prime (131115310250413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65557655125256 + 65557655125257.

It is an arithmetic number, because the mean of its divisors is an integer number (65557655125257).

Almost surely, 2^{131115310250513} is an apocalyptic number.

It is an amenable number.

131115310250513 is a deficient number, since it is larger than the sum of its proper divisors (1).

131115310250513 is an equidigital number, since it uses as much as digits as its factorization.

131115310250513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 32.

Adding to 131115310250513 its reverse (315052013511131), we get a palindrome (446167323761644).

The spelling of 131115310250513 in words is "one hundred thirty-one trillion, one hundred fifteen billion, three hundred ten million, two hundred fifty thousand, five hundred thirteen".