229278231 has 24 divisors (see below), whose sum is σ = 407607200. Its totient is φ = 120937536.

The previous prime is 229278229. The next prime is 229278239. The reversal of 229278231 is 132872922.

It is not a de Polignac number, because 229278231 - 2¹ = 229278229 is a prime.

It is a super-2 number, since 2×229278231² = 105137014420978722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229278239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139156 + ... + 140793.

Almost surely, 2^229278231 is an apocalyptic number.

229278231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

229278231 is a deficient number, since it is larger than the sum of its proper divisors (178328969).

229278231 is a wasteful number, since it uses less digits than its factorization.

229278231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279975 (or 279972 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 229278231 is about 15141.9361707808. The cubic root of 229278231 is about 612.0509937645.

The spelling of 229278231 in words is "two hundred twenty-nine million, two hundred seventy-eight thousand, two hundred thirty-one".