331320201020 has 48 divisors (see below), whose sum is σ = 718512076800. Its totient is φ = 128200234560.

The previous prime is 331320201011. The next prime is 331320201029. The reversal of 331320201020 is 20102023133.

It is an interprime number because it is at equal distance from previous prime (331320201011) and next prime (331320201029).

It is a self number, because there is not a number n which added to its sum of digits gives 331320201020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331320201029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1415921 + ... + 1633239.

It is an arithmetic number, because the mean of its divisors is an integer number (14969001600).

Almost surely, 2^331320201020 is an apocalyptic number.

It is an amenable number.

331320201020 is an abundant number, since it is smaller than the sum of its proper divisors (387191875780).

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

331320201020 is a wasteful number, since it uses less digits than its factorization.

331320201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219818 (or 219816 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 331320201020 its reverse (20102023133), we get a palindrome (351422224153).

The spelling of 331320201020 in words is "three hundred thirty-one billion, three hundred twenty million, two hundred one thousand, twenty".