243432431004 has 144 divisors (see below), whose sum is σ = 679069591200. Its totient is φ = 67625832960.

The previous prime is 243432430991. The next prime is 243432431059. The reversal of 243432431004 is 400134234342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42399574 + ... + 42405314.

It is an arithmetic number, because the mean of its divisors is an integer number (4715761050).

Almost surely, 2^243432431004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243432431004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339534795600).

243432431004 is an abundant number, since it is smaller than the sum of its proper divisors (435637160196).

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

243432431004 is a wasteful number, since it uses less digits than its factorization.

243432431004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7748 (or 7739 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 243432431004 its reverse (400134234342), we get a palindrome (643566665346).

The spelling of 243432431004 in words is "two hundred forty-three billion, four hundred thirty-two million, four hundred thirty-one thousand, four".