202103310420 has 144 divisors (see below), whose sum is σ = 670696790400. Its totient is φ = 48854188800.

The previous prime is 202103310397. The next prime is 202103310433. The reversal of 202103310420 is 24013301202.

202103310420 is a `hidden beast` number, since 2 + 0 + 210 + 3 + 31 + 0 + 420 = 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 = 202103310393 and 202103310402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544785 + ... + 837255.

It is an arithmetic number, because the mean of its divisors is an integer number (4657616600).

Almost surely, 2^202103310420 is an apocalyptic number.

202103310420 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 202103310420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335348395200).

202103310420 is an abundant number, since it is smaller than the sum of its proper divisors (468593479980).

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

202103310420 is a wasteful number, since it uses less digits than its factorization.

202103310420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292846 (or 292841 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 202103310420 its reverse (24013301202), we get a palindrome (226116611622).

The spelling of 202103310420 in words is "two hundred two billion, one hundred three million, three hundred ten thousand, four hundred twenty".