231040323 has 32 divisors (see below), whose sum is σ = 364089600. Its totient is φ = 144384768.

The previous prime is 231040309. The next prime is 231040331. The reversal of 231040323 is 323040132.

231040323 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 231040323 - 2⁶ = 231040259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231040296 and 231040305.

It is not an unprimeable number, because it can be changed into a prime (231040343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47440 + ... + 52082.

It is an arithmetic number, because the mean of its divisors is an integer number (11377800).

Almost surely, 2^231040323 is an apocalyptic number.

231040323 is a deficient number, since it is larger than the sum of its proper divisors (133049277).

231040323 is a wasteful number, since it uses less digits than its factorization.

231040323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768 (or 4762 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231040323 is about 15200.0106249963. The cubic root of 231040323 is about 613.6149437012.

Adding to 231040323 its reverse (323040132), we get a palindrome (554080455).

The spelling of 231040323 in words is "two hundred thirty-one million, forty thousand, three hundred twenty-three".