102823585 has 4 divisors (see below), whose sum is σ = 123388308. Its totient is φ = 82258864.

The previous prime is 102823583. The next prime is 102823597. The reversal of 102823585 is 585328201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 585328201 = 83 ⋅7052147.

It can be written as a sum of positive squares in 2 ways, for example, as 62157456 + 40666129 = 7884^2 + 6377^2 .

It is a cyclic number.

It is not a de Polignac number, because 102823585 - 2¹ = 102823583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102823585.

It is not an unprimeable number, because it can be changed into a prime (102823583) 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, 10282354 + ... + 10282363.

It is an arithmetic number, because the mean of its divisors is an integer number (30847077).

Almost surely, 2^102823585 is an apocalyptic number.

It is an amenable number.

102823585 is a deficient number, since it is larger than the sum of its proper divisors (20564723).

102823585 is an equidigital number, since it uses as much as digits as its factorization.

102823585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20564722.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 102823585 is about 10140.1964971099. The cubic root of 102823585 is about 468.4870392370.

The spelling of 102823585 in words is "one hundred two million, eight hundred twenty-three thousand, five hundred eighty-five".