228312859 has 4 divisors (see below), whose sum is σ = 228387600. Its totient is φ = 228238120.

The previous prime is 228312841. The next prime is 228312869. The reversal of 228312859 is 958213822.

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

It is a cyclic number.

It is not a de Polignac number, because 228312859 - 2¹⁷ = 228181787 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228312809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32584 + ... + 38965.

It is an arithmetic number, because the mean of its divisors is an integer number (57096900).

Almost surely, 2^228312859 is an apocalyptic number.

228312859 is a deficient number, since it is larger than the sum of its proper divisors (74741).

228312859 is an equidigital number, since it uses as much as digits as its factorization.

228312859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74740.

The product of its digits is 69120, while the sum is 40.

The square root of 228312859 is about 15110.0251157965. The cubic root of 228312859 is about 611.1907753030.

The spelling of 228312859 in words is "two hundred twenty-eight million, three hundred twelve thousand, eight hundred fifty-nine".