3243113053521 has 32 divisors (see below), whose sum is σ = 4731852902400. Its totient is φ = 1959446993280.

The previous prime is 3243113053507. The next prime is 3243113053561. The reversal of 3243113053521 is 1253503113423.

It is not a de Polignac number, because 3243113053521 - 2¹⁴ = 3243113037137 is a prime.

It is a super-2 number, since 2×3243113053521² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (3243113053561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20964760 + ... + 21118886.

It is an arithmetic number, because the mean of its divisors is an integer number (147870403200).

Almost surely, 2^{3243113053521} is an apocalyptic number.

It is an amenable number.

3243113053521 is a deficient number, since it is larger than the sum of its proper divisors (1488739848879).

3243113053521 is a wasteful number, since it uses less digits than its factorization.

3243113053521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156109.

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 3243113053521 its reverse (1253503113423), we get a palindrome (4496616166944).

The spelling of 3243113053521 in words is "three trillion, two hundred forty-three billion, one hundred thirteen million, fifty-three thousand, five hundred twenty-one".