231040330 has 32 divisors (see below), whose sum is σ = 430230528. Its totient is φ = 89270400.

The previous prime is 231040309. The next prime is 231040331. The reversal of 231040330 is 33040132.

231040330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231040331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39495 + ... + 44965.

It is an arithmetic number, because the mean of its divisors is an integer number (13444704).

Almost surely, 2^231040330 is an apocalyptic number.

231040330 is a deficient number, since it is larger than the sum of its proper divisors (199190198).

231040330 is a wasteful number, since it uses less digits than its factorization.

231040330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 231040330 is about 15200.0108552593. The cubic root of 231040330 is about 613.6149498983.

Adding to 231040330 its reverse (33040132), we get a palindrome (264080462).

The spelling of 231040330 in words is "two hundred thirty-one million, forty thousand, three hundred thirty".