228231075 has 12 divisors (see below), whose sum is σ = 377342168. Its totient is φ = 121723200.

The previous prime is 228231071. The next prime is 228231109. The reversal of 228231075 is 570132822.

It is not a de Polignac number, because 228231075 - 2² = 228231071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228231071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1521466 + ... + 1521615.

Almost surely, 2^228231075 is an apocalyptic number.

228231075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228231075 is a deficient number, since it is larger than the sum of its proper divisors (149111093).

228231075 is a wasteful number, since it uses less digits than its factorization.

228231075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043094 (or 3043089 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 228231075 is about 15107.3185906699. The cubic root of 228231075 is about 611.1177883262.

Adding to 228231075 its reverse (570132822), we get a palindrome (798363897).

The spelling of 228231075 in words is "two hundred twenty-eight million, two hundred thirty-one thousand, seventy-five".