23210322020 has 24 divisors (see below), whose sum is σ = 51608834424. Its totient is φ = 8738003456.

The previous prime is 23210322019. The next prime is 23210322053. The reversal of 23210322020 is 2022301232.

It can be written as a sum of positive squares in 4 ways, for example, as 10172336164 + 13037985856 = 100858^2 + 114184^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 23210322020.

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, 34132487 + ... + 34133166.

It is an arithmetic number, because the mean of its divisors is an integer number (2150368101).

Almost surely, 2^23210322020 is an apocalyptic number.

23210322020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23210322020 is an abundant number, since it is smaller than the sum of its proper divisors (28398512404).

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

23210322020 is a wasteful number, since it uses less digits than its factorization.

23210322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68265679 (or 68265677 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23210322020 its reverse (2022301232), we get a palindrome (25232623252).

The spelling of 23210322020 in words is "twenty-three billion, two hundred ten million, three hundred twenty-two thousand, twenty".