229857831 has 24 divisors (see below), whose sum is σ = 393504384. Its totient is φ = 131346360.

The previous prime is 229857809. The next prime is 229857841. The reversal of 229857831 is 138758922.

It is a happy number.

It is not a de Polignac number, because 229857831 - 2⁹ = 229857319 is a prime.

It is a super-3 number, since 3×229857831³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229857841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65865 + ... + 69266.

It is an arithmetic number, because the mean of its divisors is an integer number (16396016).

Almost surely, 2^229857831 is an apocalyptic number.

229857831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

229857831 is a deficient number, since it is larger than the sum of its proper divisors (163646553).

229857831 is an equidigital number, since it uses as much as digits as its factorization.

229857831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135153 (or 135141 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 229857831 is about 15161.0629904370. The cubic root of 229857831 is about 612.5663010833.

The spelling of 229857831 in words is "two hundred twenty-nine million, eight hundred fifty-seven thousand, eight hundred thirty-one".