231025228 has 24 divisors (see below), whose sum is σ = 465382400. Its totient is φ = 98296848.

The previous prime is 231025129. The next prime is 231025229. The reversal of 231025228 is 822520132.

It is not an unprimeable number, because it can be changed into a prime (231025229) 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 7 ways as a sum of consecutive naturals, for example, 25788 + ... + 33571.

Almost surely, 2^231025228 is an apocalyptic number.

231025228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231025228 is an abundant number, since it is smaller than the sum of its proper divisors (234357172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231025228 is a wasteful number, since it uses less digits than its factorization.

231025228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59509 (or 59507 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 231025228 is about 15199.5140711800. The cubic root of 231025228 is about 613.6015799167.

The spelling of 231025228 in words is "two hundred thirty-one million, twenty-five thousand, two hundred twenty-eight".