231323404 has 48 divisors (see below), whose sum is σ = 462520800. Its totient is φ = 100348416.

The previous prime is 231323381. The next prime is 231323413. The reversal of 231323404 is 404323132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134502 + ... + 136210.

It is an arithmetic number, because the mean of its divisors is an integer number (9635850).

Almost surely, 2^231323404 is an apocalyptic number.

It is an amenable number.

231323404 is a deficient number, since it is larger than the sum of its proper divisors (231197396).

231323404 is a wasteful number, since it uses less digits than its factorization.

231323404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1880 counting only the distinct ones).

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

The square root of 231323404 is about 15209.3196429032. The cubic root of 231323404 is about 613.8654509649.

Adding to 231323404 its reverse (404323132), we get a palindrome (635646536).

The spelling of 231323404 in words is "two hundred thirty-one million, three hundred twenty-three thousand, four hundred four".