231403004 has 24 divisors (see below), whose sum is σ = 468386688. Its totient is φ = 97976880.

The previous prime is 231402989. The next prime is 231403009. The reversal of 231403004 is 400304132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231403009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47462 + ... + 52109.

It is an arithmetic number, because the mean of its divisors is an integer number (19516112).

Almost surely, 2^231403004 is an apocalyptic number.

It is an amenable number.

231403004 is an abundant number, since it is smaller than the sum of its proper divisors (236983684).

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

231403004 is a wasteful number, since it uses less digits than its factorization.

231403004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99665 (or 99663 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231403004 is about 15211.9362344180. The cubic root of 231403004 is about 613.9358546873.

Adding to 231403004 its reverse (400304132), we get a palindrome (631707136).

The spelling of 231403004 in words is "two hundred thirty-one million, four hundred three thousand, four".