228143823 has 8 divisors (see below), whose sum is σ = 304656000. Its totient is φ = 151863768.

The previous prime is 228143819. The next prime is 228143827. The reversal of 228143823 is 328341822.

It is an interprime number because it is at equal distance from previous prime (228143819) and next prime (228143827).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228143823 - 2² = 228143819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228143827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55723 + ... + 59676.

It is an arithmetic number, because the mean of its divisors is an integer number (38082000).

Almost surely, 2^228143823 is an apocalyptic number.

228143823 is a deficient number, since it is larger than the sum of its proper divisors (76512177).

228143823 is a wasteful number, since it uses less digits than its factorization.

228143823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116061.

The product of its digits is 18432, while the sum is 33.

The square root of 228143823 is about 15104.4305751657. The cubic root of 228143823 is about 611.0399022838.

The spelling of 228143823 in words is "two hundred twenty-eight million, one hundred forty-three thousand, eight hundred twenty-three".