228323823 has 16 divisors (see below), whose sum is σ = 374685696. Its totient is φ = 120434400.

The previous prime is 228323819. The next prime is 228323839. The reversal of 228323823 is 328323822.

It is not a de Polignac number, because 228323823 - 2² = 228323819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228323813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417903 + ... + 418448.

It is an arithmetic number, because the mean of its divisors is an integer number (23417856).

Almost surely, 2^228323823 is an apocalyptic number.

228323823 is a deficient number, since it is larger than the sum of its proper divisors (146361873).

228323823 is a wasteful number, since it uses less digits than its factorization.

228323823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836374.

The product of its digits is 27648, while the sum is 33.

The square root of 228323823 is about 15110.3879169266. The cubic root of 228323823 is about 611.2005586450.

Subtracting 228323823 from its reverse (328323822), we obtain a palindrome (99999999).

It can be divided in two parts, 2283 and 23823, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 228323823 in words is "two hundred twenty-eight million, three hundred twenty-three thousand, eight hundred twenty-three".