202131304420 has 48 divisors (see below), whose sum is σ = 440271921600. Its totient is φ = 77858444160.

The previous prime is 202131304411. The next prime is 202131304421. The reversal of 202131304420 is 24403131202.

It is a junction number, because it is equal to n+sod(n) for n = 202131304391 and 202131304400.

It is not an unprimeable number, because it can be changed into a prime (202131304421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239946 + ... + 679585.

It is an arithmetic number, because the mean of its divisors is an integer number (9172331700).

Almost surely, 2^202131304420 is an apocalyptic number.

202131304420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202131304420 is an abundant number, since it is smaller than the sum of its proper divisors (238140617180).

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

202131304420 is a wasteful number, since it uses less digits than its factorization.

202131304420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919948 (or 919946 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 202131304420 its reverse (24403131202), we get a palindrome (226534435622).

The spelling of 202131304420 in words is "two hundred two billion, one hundred thirty-one million, three hundred four thousand, four hundred twenty".