231040004 has 24 divisors (see below), whose sum is σ = 437313240. Its totient is φ = 106170624.

The previous prime is 231039971. The next prime is 231040009. The reversal of 231040004 is 400040132.

It can be written as a sum of positive squares in 4 ways, for example, as 34199104 + 196840900 = 5848^2 + 14030^2 .

It is not an unprimeable number, because it can be changed into a prime (231040009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2582 + ... + 21650.

It is an arithmetic number, because the mean of its divisors is an integer number (18221385).

Almost surely, 2^231040004 is an apocalyptic number.

It is an amenable number.

231040004 is a deficient number, since it is larger than the sum of its proper divisors (206273236).

231040004 is a wasteful number, since it uses less digits than its factorization.

231040004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19319 (or 19317 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 231040004 is about 15200.0001315789. Note that the first 3 decimals coincide. The cubic root of 231040004 is about 613.6146612927.

Adding to 231040004 its reverse (400040132), we get a palindrome (631080136).

The spelling of 231040004 in words is "two hundred thirty-one million, forty thousand, four".