31322020111020 has 72 divisors (see below), whose sum is σ = 95693653844880. Its totient is φ = 8292448483200.

The previous prime is 31322020111003. The next prime is 31322020111021. The reversal of 31322020111020 is 2011102022313.

31322020111020 is a `hidden beast` number, since 31 + 322 + 0 + 201 + 110 + 2 + 0 = 666.

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 = 31322020110984 and 31322020111002.

It is not an unprimeable number, because it can be changed into a prime (31322020111021) 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, 625914631 + ... + 625964670.

Almost surely, 2^{31322020111020} is an apocalyptic number.

31322020111020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31322020111020 is an abundant number, since it is smaller than the sum of its proper divisors (64371633733860).

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

31322020111020 is a wasteful number, since it uses less digits than its factorization.

31322020111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251879455 (or 1251879450 counting only the distinct ones).

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

Adding to 31322020111020 its reverse (2011102022313), we get a palindrome (33333122133333).

The spelling of 31322020111020 in words is "thirty-one trillion, three hundred twenty-two billion, twenty million, one hundred eleven thousand, twenty".