322131112020 has 72 divisors (see below), whose sum is σ = 1010825229960. Its totient is φ = 82939503360.

The previous prime is 322131112013. The next prime is 322131112021. The reversal of 322131112020 is 20211131223.

322131112020 is a `hidden beast` number, since 322 + 1 + 311 + 12 + 0 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 96663784464 + 225467327556 = 310908^2 + 474834^2 .

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 = 322131111984 and 322131112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322131112021) 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, 30850251 + ... + 30860690.

It is an arithmetic number, because the mean of its divisors is an integer number (14039239305).

Almost surely, 2^322131112020 is an apocalyptic number.

322131112020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

322131112020 is an abundant number, since it is smaller than the sum of its proper divisors (688694117940).

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

322131112020 is a wasteful number, since it uses less digits than its factorization.

322131112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61710985 (or 61710980 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 322131112020 its reverse (20211131223), we get a palindrome (342342243243).

The spelling of 322131112020 in words is "three hundred twenty-two billion, one hundred thirty-one million, one hundred twelve thousand, twenty".