285205243423 has 4 divisors (see below), whose sum is σ = 285717282120. Its totient is φ = 284693204728.

The previous prime is 285205243417. The next prime is 285205243429. The reversal of 285205243423 is 324342502582.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (285205243417) and next prime (285205243429).

It is a cyclic number.

It is not a de Polignac number, because 285205243423 - 2⁹ = 285205242911 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 (285205243429) 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, 256018513 + ... + 256019626.

It is an arithmetic number, because the mean of its divisors is an integer number (71429320530).

Almost surely, 2^285205243423 is an apocalyptic number.

285205243423 is a deficient number, since it is larger than the sum of its proper divisors (512038697).

285205243423 is an equidigital number, since it uses as much as digits as its factorization.

285205243423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512038696.

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 285205243423 in words is "two hundred eighty-five billion, two hundred five million, two hundred forty-three thousand, four hundred twenty-three".