3131322022020 has 192 divisors, whose sum is σ = 9693002350080. Its totient is φ = 751271043072.

The previous prime is 3131322022013. The next prime is 3131322022051. The reversal of 3131322022020 is 202202231313.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39114754 + ... + 39194726.

It is an arithmetic number, because the mean of its divisors is an integer number (50484387240).

Almost surely, 2^{3131322022020} is an apocalyptic number.

3131322022020 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 3131322022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4846501175040).

3131322022020 is an abundant number, since it is smaller than the sum of its proper divisors (6561680328060).

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

3131322022020 is a wasteful number, since it uses less digits than its factorization.

3131322022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81694 (or 81692 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 3131322022020 its reverse (202202231313), we get a palindrome (3333524253333).

The spelling of 3131322022020 in words is "three trillion, one hundred thirty-one billion, three hundred twenty-two million, twenty-two thousand, twenty".