231140404 has 24 divisors (see below), whose sum is σ = 441655200. Its totient is φ = 104971680.

The previous prime is 231140389. The next prime is 231140417. The reversal of 231140404 is 404041132.

It is a super-2 number, since 2×231140404² = 106851772722566432, which contains 22 as substring.

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, 89767 + ... + 92305.

It is an arithmetic number, because the mean of its divisors is an integer number (18402300).

Almost surely, 2^231140404 is an apocalyptic number.

It is an amenable number.

231140404 is a deficient number, since it is larger than the sum of its proper divisors (210514796).

231140404 is a wasteful number, since it uses less digits than its factorization.

231140404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623 (or 4621 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 231140404 is about 15203.3024044120. The cubic root of 231140404 is about 613.7035318912.

Adding to 231140404 its reverse (404041132), we get a palindrome (635181536).

The spelling of 231140404 in words is "two hundred thirty-one million, one hundred forty thousand, four hundred four".