102320135 has 4 divisors (see below), whose sum is σ = 122784168. Its totient is φ = 81856104.

The previous prime is 102320131. The next prime is 102320143. The reversal of 102320135 is 531023201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531023201 = 9337 ⋅56873.

It is a cyclic number.

It is not a de Polignac number, because 102320135 - 2² = 102320131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10232009 + ... + 10232018.

It is an arithmetic number, because the mean of its divisors is an integer number (30696042).

Almost surely, 2^102320135 is an apocalyptic number.

102320135 is a deficient number, since it is larger than the sum of its proper divisors (20464033).

102320135 is an equidigital number, since it uses as much as digits as its factorization.

102320135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464032.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 102320135 is about 10115.3415661558. The cubic root of 102320135 is about 467.7211780023.

Adding to 102320135 its reverse (531023201), we get a palindrome (633343336).

The spelling of 102320135 in words is "one hundred two million, three hundred twenty thousand, one hundred thirty-five".