320240434040 has 32 divisors (see below), whose sum is σ = 721445114880. Its totient is φ = 127935437952.

The previous prime is 320240434037. The next prime is 320240434051. The reversal of 320240434040 is 40434042023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4990712 + ... + 5054471.

It is an arithmetic number, because the mean of its divisors is an integer number (22545159840).

Almost surely, 2^320240434040 is an apocalyptic number.

It is an amenable number.

320240434040 is an abundant number, since it is smaller than the sum of its proper divisors (401204680840).

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

320240434040 is a wasteful number, since it uses less digits than its factorization.

320240434040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045991 (or 10045987 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 320240434040 its reverse (40434042023), we get a palindrome (360674476063).

The spelling of 320240434040 in words is "three hundred twenty billion, two hundred forty million, four hundred thirty-four thousand, forty".