331020532560 has 160 divisors (see below), whose sum is σ = 1078408298880. Its totient is φ = 83888953344.

The previous prime is 331020532553. The next prime is 331020532613. The reversal of 331020532560 is 65235020133.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51615 + ... + 815294.

It is an arithmetic number, because the mean of its divisors is an integer number (6740051868).

Almost surely, 2^331020532560 is an apocalyptic number.

331020532560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331020532560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539204149440).

331020532560 is an abundant number, since it is smaller than the sum of its proper divisors (747387766320).

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

331020532560 is a wasteful number, since it uses less digits than its factorization.

331020532560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867005 (or 866999 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 331020532560 its reverse (65235020133), we get a palindrome (396255552693).

The spelling of 331020532560 in words is "three hundred thirty-one billion, twenty million, five hundred thirty-two thousand, five hundred sixty".