31322020001020 has 36 divisors (see below), whose sum is σ = 76515220290600. Its totient is φ = 10738978285728.

The previous prime is 31322020000979. The next prime is 31322020001023. The reversal of 31322020001020 is 2010002022313.

It is a junction number, because it is equal to n+sod(n) for n = 31322020000985 and 31322020001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31322020001023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15980621470 + ... + 15980623429.

It is an arithmetic number, because the mean of its divisors is an integer number (2125422785850).

Almost surely, 2^{31322020001020} is an apocalyptic number.

It is an amenable number.

31322020001020 is an abundant number, since it is smaller than the sum of its proper divisors (45193200289580).

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

31322020001020 is a wasteful number, since it uses less digits than its factorization.

31322020001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31961244922 (or 31961244913 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31322020001020 its reverse (2010002022313), we get a palindrome (33332022023333).

The spelling of 31322020001020 in words is "thirty-one trillion, three hundred twenty-two billion, twenty million, one thousand, twenty".