231324225 has 96 divisors (see below), whose sum is σ = 443971584. Its totient is φ = 105177600.

The previous prime is 231324113. The next prime is 231324227. The reversal of 231324225 is 522423132.

231324225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231324225 - 2¹⁰ = 231323201 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231324195 and 231324204.

It is not an unprimeable number, because it can be changed into a prime (231324227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1385092 + ... + 1385258.

It is an arithmetic number, because the mean of its divisors is an integer number (4624704).

Almost surely, 2^231324225 is an apocalyptic number.

231324225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231324225 is a deficient number, since it is larger than the sum of its proper divisors (212647359).

231324225 is a wasteful number, since it uses less digits than its factorization.

231324225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 282 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 231324225 is about 15209.3466329096. The cubic root of 231324225 is about 613.8661771963.

Adding to 231324225 its reverse (522423132), we get a palindrome (753747357).

The spelling of 231324225 in words is "two hundred thirty-one million, three hundred twenty-four thousand, two hundred twenty-five".