102805323 has 4 divisors (see below), whose sum is σ = 137073768. Its totient is φ = 68536880.

The previous prime is 102805321. The next prime is 102805337. The reversal of 102805323 is 323508201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323508201 = 3 ⋅107836067.

It is a cyclic number.

It is not a de Polignac number, because 102805323 - 2¹ = 102805321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102805293 and 102805302.

It is not an unprimeable number, because it can be changed into a prime (102805321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17134218 + ... + 17134223.

It is an arithmetic number, because the mean of its divisors is an integer number (34268442).

Almost surely, 2^102805323 is an apocalyptic number.

102805323 is a deficient number, since it is larger than the sum of its proper divisors (34268445).

102805323 is an equidigital number, since it uses as much as digits as its factorization.

102805323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34268444.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 102805323 is about 10139.2959814772. The cubic root of 102805323 is about 468.4593023552.

The spelling of 102805323 in words is "one hundred two million, eight hundred five thousand, three hundred twenty-three".