3243100520 has 64 divisors (see below), whose sum is σ = 8005003200. Its totient is φ = 1172692480.

The previous prime is 3243100513. The next prime is 3243100529. The reversal of 3243100520 is 250013423.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3243100492 and 3243100501.

It is not an unprimeable number, because it can be changed into a prime (3243100529) 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, 58172 + ... + 99348.

It is an arithmetic number, because the mean of its divisors is an integer number (125078175).

Almost surely, 2^3243100520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3243100520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4002501600).

3243100520 is an abundant number, since it is smaller than the sum of its proper divisors (4761902680).

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

3243100520 is a wasteful number, since it uses less digits than its factorization.

3243100520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41378 (or 41374 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3243100520 is about 56948.2266624695. The cubic root of 3243100520 is about 1480.1991027487.

Adding to 3243100520 its reverse (250013423), we get a palindrome (3493113943).

The spelling of 3243100520 in words is "three billion, two hundred forty-three million, one hundred thousand, five hundred twenty".