331130203020 has 72 divisors (see below), whose sum is σ = 1014180070176. Its totient is φ = 87444087552.

The previous prime is 331130203013. The next prime is 331130203021. The reversal of 331130203020 is 20302031133.

331130203020 is a `hidden beast` number, since 3 + 311 + 30 + 20 + 302 + 0 = 666.

331130203020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×331130203020² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 331130202984 and 331130203002.

It is not an unprimeable number, because it can be changed into a prime (331130203021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8911617 + ... + 8948696.

It is an arithmetic number, because the mean of its divisors is an integer number (14085834308).

Almost surely, 2^331130203020 is an apocalyptic number.

331130203020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331130203020 is an abundant number, since it is smaller than the sum of its proper divisors (683049867156).

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

331130203020 is a wasteful number, since it uses less digits than its factorization.

331130203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17860431 (or 17860426 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 331130203020 its reverse (20302031133), we get a palindrome (351432234153).

The spelling of 331130203020 in words is "three hundred thirty-one billion, one hundred thirty million, two hundred three thousand, twenty".