231244404 has 24 divisors (see below), whose sum is σ = 571310208. Its totient is φ = 72547200.

The previous prime is 231244397. The next prime is 231244427. The reversal of 231244404 is 404442132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566572 + ... + 566979.

It is an arithmetic number, because the mean of its divisors is an integer number (23804592).

Almost surely, 2^231244404 is an apocalyptic number.

It is an amenable number.

231244404 is an abundant number, since it is smaller than the sum of its proper divisors (340065804).

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

231244404 is a wasteful number, since it uses less digits than its factorization.

231244404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133575 (or 1133573 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 231244404 is about 15206.7223292858. The cubic root of 231244404 is about 613.7955619532.

Adding to 231244404 its reverse (404442132), we get a palindrome (635686536).

The spelling of 231244404 in words is "two hundred thirty-one million, two hundred forty-four thousand, four hundred four".