202020312102320 has 160 divisors (see below), whose sum is σ = 486210504018240. Its totient is φ = 78020048977920.

The previous prime is 202020312102319. The next prime is 202020312102403. The reversal of 202020312102320 is 23201213020202.

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 = 202020312102292 and 202020312102301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193248872 + ... + 194291448.

It is an arithmetic number, because the mean of its divisors is an integer number (3038815650114).

Almost surely, 2^{202020312102320} is an apocalyptic number.

202020312102320 is a gapful number since it is divisible by the number (20) 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 202020312102320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243105252009120).

202020312102320 is an abundant number, since it is smaller than the sum of its proper divisors (284190191915920).

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

202020312102320 is a wasteful number, since it uses less digits than its factorization.

202020312102320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043383 (or 1043377 counting only the distinct ones).

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

Adding to 202020312102320 its reverse (23201213020202), we get a palindrome (225221525122522).

The spelling of 202020312102320 in words is "two hundred two trillion, twenty billion, three hundred twelve million, one hundred two thousand, three hundred twenty".