202423113220 has 24 divisors (see below), whose sum is σ = 425476084824. Its totient is φ = 80895426816.

The previous prime is 202423113169. The next prime is 202423113239. The reversal of 202423113220 is 22311324202.

It can be written as a sum of positive squares in 4 ways, for example, as 18045623556 + 184377489664 = 134334^2 + 429392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202423113191 and 202423113200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4591167 + ... + 4635046.

It is an arithmetic number, because the mean of its divisors is an integer number (17728170201).

Almost surely, 2^202423113220 is an apocalyptic number.

202423113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202423113220 is an abundant number, since it is smaller than the sum of its proper divisors (223052971604).

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

202423113220 is a wasteful number, since it uses less digits than its factorization.

202423113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227319 (or 9227317 counting only the distinct ones).

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

Adding to 202423113220 its reverse (22311324202), we get a palindrome (224734437422).

The spelling of 202423113220 in words is "two hundred two billion, four hundred twenty-three million, one hundred thirteen thousand, two hundred twenty".