231040325 has 12 divisors (see below), whose sum is σ = 288210720. Its totient is φ = 183722160.

The previous prime is 231040309. The next prime is 231040331. The reversal of 231040325 is 523040132.

It is a happy number.

231040325 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 231040325 - 2⁴ = 231040309 is a prime.

It is a super-2 number, since 2×231040325² = 106759263552211250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231040297 and 231040306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23495 + ... + 31844.

It is an arithmetic number, because the mean of its divisors is an integer number (24017560).

Almost surely, 2^231040325 is an apocalyptic number.

231040325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231040325 is a deficient number, since it is larger than the sum of its proper divisors (57170395).

231040325 is a wasteful number, since it uses less digits than its factorization.

231040325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55516 (or 55511 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 231040325 is about 15200.0106907857. The cubic root of 231040325 is about 613.6149454718.

Adding to 231040325 its reverse (523040132), we get a palindrome (754080457).

The spelling of 231040325 in words is "two hundred thirty-one million, forty thousand, three hundred twenty-five".