234431553440 has 96 divisors (see below), whose sum is σ = 643693599360. Its totient is φ = 79014196224.

The previous prime is 234431553437. The next prime is 234431553509. The reversal of 234431553440 is 44355134432.

It is a junction number, because it is equal to n+sod(n) for n = 234431553394 and 234431553403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1707767 + ... + 1839926.

It is an arithmetic number, because the mean of its divisors is an integer number (6705141660).

Almost surely, 2^234431553440 is an apocalyptic number.

234431553440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234431553440 is an abundant number, since it is smaller than the sum of its proper divisors (409262045920).

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

234431553440 is a wasteful number, since it uses less digits than its factorization.

234431553440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547774 (or 3547766 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 234431553440 its reverse (44355134432), we get a palindrome (278786687872).

The spelling of 234431553440 in words is "two hundred thirty-four billion, four hundred thirty-one million, five hundred fifty-three thousand, four hundred forty".