331011022020 has 72 divisors (see below), whose sum is σ = 1078150195584. Its totient is φ = 75659661504.

The previous prime is 331011021997. The next prime is 331011022021. The reversal of 331011022020 is 20220110133.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (331011022021) 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, 56291452 + ... + 56297331.

It is an arithmetic number, because the mean of its divisors is an integer number (14974308272).

Almost surely, 2^331011022020 is an apocalyptic number.

331011022020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331011022020 is an abundant number, since it is smaller than the sum of its proper divisors (747139173564).

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

331011022020 is a wasteful number, since it uses less digits than its factorization.

331011022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112588809 (or 112588800 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 331011022020 its reverse (20220110133), we get a palindrome (351231132153).

The spelling of 331011022020 in words is "three hundred thirty-one billion, eleven million, twenty-two thousand, twenty".