31120032222020 has 96 divisors (see below), whose sum is σ = 77269841671680. Its totient is φ = 10300961986560.

The previous prime is 31120032222017. The next prime is 31120032222043. The reversal of 31120032222020 is 2022223002113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31120032221983 and 31120032222001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50390300 + ... + 51004140.

It is an arithmetic number, because the mean of its divisors is an integer number (804894184080).

Almost surely, 2^{31120032222020} is an apocalyptic number.

It is an amenable number.

31120032222020 is an abundant number, since it is smaller than the sum of its proper divisors (46149809449660).

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

31120032222020 is a wasteful number, since it uses less digits than its factorization.

31120032222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626373 (or 626371 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31120032222020 its reverse (2022223002113), we get a palindrome (33142255224133).

The spelling of 31120032222020 in words is "thirty-one trillion, one hundred twenty billion, thirty-two million, two hundred twenty-two thousand, twenty".