102135613 has 2 divisors, whose sum is σ = 102135614. Its totient is φ = 102135612.

The previous prime is 102135569. The next prime is 102135623. The reversal of 102135613 is 316531201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97653924 + 4481689 = 9882^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 102135613 - 2²⁵ = 68581181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102135623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51067806 + 51067807.

It is an arithmetic number, because the mean of its divisors is an integer number (51067807).

Almost surely, 2^102135613 is an apocalyptic number.

It is an amenable number.

102135613 is a deficient number, since it is larger than the sum of its proper divisors (1).

102135613 is an equidigital number, since it uses as much as digits as its factorization.

102135613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 102135613 is about 10106.2165522019. The cubic root of 102135613 is about 467.4398492773.

Adding to 102135613 its reverse (316531201), we get a palindrome (418666814).

The spelling of 102135613 in words is "one hundred two million, one hundred thirty-five thousand, six hundred thirteen".