231243304 has 8 divisors (see below), whose sum is σ = 433581210. Its totient is φ = 115621648.

The previous prime is 231243301. The next prime is 231243317. The reversal of 231243304 is 403342132.

It is a happy number.

231243304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141562404 + 89680900 = 11898^2 + 9470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (231243301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14452699 + ... + 14452714.

Almost surely, 2^231243304 is an apocalyptic number.

It is an amenable number.

231243304 is a deficient number, since it is larger than the sum of its proper divisors (202337906).

231243304 is a wasteful number, since it uses less digits than its factorization.

231243304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28905419 (or 28905415 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 231243304 is about 15206.6861610280. The cubic root of 231243304 is about 613.7945887027.

Adding to 231243304 its reverse (403342132), we get a palindrome (634585436).

The spelling of 231243304 in words is "two hundred thirty-one million, two hundred forty-three thousand, three hundred four".