228144831 has 4 divisors (see below), whose sum is σ = 304193112. Its totient is φ = 152096552.

The previous prime is 228144823. The next prime is 228144857. The reversal of 228144831 is 138441822.

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 228144831 - 2³ = 228144823 is a prime.

It is a super-2 number, since 2×228144831² = 104100127824037122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228144792 and 228144801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144871) 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, 38024136 + ... + 38024141.

It is an arithmetic number, because the mean of its divisors is an integer number (76048278).

Almost surely, 2^228144831 is an apocalyptic number.

228144831 is a deficient number, since it is larger than the sum of its proper divisors (76048281).

228144831 is an equidigital number, since it uses as much as digits as its factorization.

228144831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76048280.

The product of its digits is 12288, while the sum is 33.

The square root of 228144831 is about 15104.4639428217. The cubic root of 228144831 is about 611.0408021946.

The spelling of 228144831 in words is "two hundred twenty-eight million, one hundred forty-four thousand, eight hundred thirty-one".