331130202020 has 48 divisors (see below), whose sum is σ = 718067040768. Its totient is φ = 128132609280.

The previous prime is 331130202017. The next prime is 331130202023. The reversal of 331130202020 is 20202031133.

It is an interprime number because it is at equal distance from previous prime (331130202017) and next prime (331130202023).

It is a self number, because there is not a number n which added to its sum of digits gives 331130202020.

It is not an unprimeable number, because it can be changed into a prime (331130202023) 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, 1625579 + ... + 1817901.

It is an arithmetic number, because the mean of its divisors is an integer number (14959730016).

Almost surely, 2^331130202020 is an apocalyptic number.

It is an amenable number.

331130202020 is an abundant number, since it is smaller than the sum of its proper divisors (386936838748).

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

331130202020 is a wasteful number, since it uses less digits than its factorization.

331130202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195140 (or 195138 counting only the distinct ones).

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

Adding to 331130202020 its reverse (20202031133), we get a palindrome (351332233153).

The spelling of 331130202020 in words is "three hundred thirty-one billion, one hundred thirty million, two hundred two thousand, twenty".