231043404 has 12 divisors (see below), whose sum is σ = 539101304. Its totient is φ = 77014464.

The previous prime is 231043381. The next prime is 231043409. The reversal of 231043404 is 404340132.

231043404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (231043409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9626797 + ... + 9626820.

Almost surely, 2^231043404 is an apocalyptic number.

It is an amenable number.

231043404 is an abundant number, since it is smaller than the sum of its proper divisors (308057900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231043404 is a wasteful number, since it uses less digits than its factorization.

231043404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19253624 (or 19253622 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 231043404 is about 15200.1119732718. Note that the first 3 decimals coincide. The cubic root of 231043404 is about 613.6176712760.

Adding to 231043404 its reverse (404340132), we get a palindrome (635383536).

The spelling of 231043404 in words is "two hundred thirty-one million, forty-three thousand, four hundred four".