135525432103213 has 2 divisors, whose sum is σ = 135525432103214. Its totient is φ = 135525432103212.

The previous prime is 135525432103121. The next prime is 135525432103231. The reversal of 135525432103213 is 312301234525531.

Together with next prime (135525432103231) 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., 113008869696969 + 22516562406244 = 10630563^2 + 4745162^2 .

It is a cyclic number.

It is not a de Polignac number, because 135525432103213 - 2²⁵ = 135525398548781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135525432103283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67762716051606 + 67762716051607.

It is an arithmetic number, because the mean of its divisors is an integer number (67762716051607).

Almost surely, 2^{135525432103213} is an apocalyptic number.

It is an amenable number.

135525432103213 is a deficient number, since it is larger than the sum of its proper divisors (1).

135525432103213 is an equidigital number, since it uses as much as digits as its factorization.

135525432103213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 40.

Adding to 135525432103213 its reverse (312301234525531), we get a palindrome (447826666628744).

The spelling of 135525432103213 in words is "one hundred thirty-five trillion, five hundred twenty-five billion, four hundred thirty-two million, one hundred three thousand, two hundred thirteen".