331603520540 has 48 divisors (see below), whose sum is σ = 722323243488. Its totient is φ = 127781950464.

The previous prime is 331603520539. The next prime is 331603520593. The reversal of 331603520540 is 45025306133.

It is a junction number, because it is equal to n+sod(n) for n = 331603520497 and 331603520506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2578217 + ... + 2703776.

It is an arithmetic number, because the mean of its divisors is an integer number (15048400906).

Almost surely, 2^331603520540 is an apocalyptic number.

It is an amenable number.

331603520540 is an abundant number, since it is smaller than the sum of its proper divisors (390719722948).

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

331603520540 is a wasteful number, since it uses less digits than its factorization.

331603520540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282118 (or 5282116 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 331603520540 its reverse (45025306133), we get a palindrome (376628826673).

The spelling of 331603520540 in words is "three hundred thirty-one billion, six hundred three million, five hundred twenty thousand, five hundred forty".