20241531220 has 48 divisors (see below), whose sum is σ = 44123788800. Its totient is φ = 7791615360.

The previous prime is 20241531217. The next prime is 20241531229. The reversal of 20241531220 is 2213514202.

It is a happy number.

It is a super-2 number, since 2×20241531220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20241531191 and 20241531200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20241531229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19786 + ... + 202174.

It is an arithmetic number, because the mean of its divisors is an integer number (919245600).

Almost surely, 2^20241531220 is an apocalyptic number.

20241531220 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 20241531220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22061894400).

20241531220 is an abundant number, since it is smaller than the sum of its proper divisors (23882257580).

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

20241531220 is a wasteful number, since it uses less digits than its factorization.

20241531220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182608 (or 182606 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The spelling of 20241531220 in words is "twenty billion, two hundred forty-one million, five hundred thirty-one thousand, two hundred twenty".