231040556 has 12 divisors (see below), whose sum is σ = 409439520. Its totient is φ = 114057840.

The previous prime is 231040531. The next prime is 231040571. The reversal of 231040556 is 655040132.

231040556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365255 + ... + 365886.

It is an arithmetic number, because the mean of its divisors is an integer number (34119960).

Almost surely, 2^231040556 is an apocalyptic number.

It is an amenable number.

231040556 is a deficient number, since it is larger than the sum of its proper divisors (178398964).

231040556 is a wasteful number, since it uses less digits than its factorization.

231040556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731224 (or 731222 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 231040556 is about 15200.0182894627. The cubic root of 231040556 is about 613.6151499744.

Adding to 231040556 its reverse (655040132), we get a palindrome (886080688).

The spelling of 231040556 in words is "two hundred thirty-one million, forty thousand, five hundred fifty-six".