231227228 has 6 divisors (see below), whose sum is σ = 404647656. Its totient is φ = 115613612.

The previous prime is 231227221. The next prime is 231227239. The reversal of 231227228 is 822722132.

It is a self number, because there is not a number n which added to its sum of digits gives 231227228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231227221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28903400 + ... + 28903407.

It is an arithmetic number, because the mean of its divisors is an integer number (67441276).

Almost surely, 2^231227228 is an apocalyptic number.

It is an amenable number.

231227228 is a deficient number, since it is larger than the sum of its proper divisors (173420428).

231227228 is a wasteful number, since it uses less digits than its factorization.

231227228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57806811 (or 57806809 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 231227228 is about 15206.1575685641. The cubic root of 231227228 is about 613.7803647370.

The spelling of 231227228 in words is "two hundred thirty-one million, two hundred twenty-seven thousand, two hundred twenty-eight".