243431004 has 24 divisors (see below), whose sum is σ = 569016448. Its totient is φ = 80999280.

The previous prime is 243430987. The next prime is 243431009. The reversal of 243431004 is 400134342.

243431004 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243431009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10912 + ... + 24615.

Almost surely, 2^243431004 is an apocalyptic number.

It is an amenable number.

243431004 is an abundant number, since it is smaller than the sum of its proper divisors (325585444).

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

243431004 is a wasteful number, since it uses less digits than its factorization.

243431004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36105 (or 36103 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243431004 is about 15602.2756032574. The cubic root of 243431004 is about 624.3938691052.

Adding to 243431004 its reverse (400134342), we get a palindrome (643565346).

The spelling of 243431004 in words is "two hundred forty-three million, four hundred thirty-one thousand, four".