3243966531 has 16 divisors (see below), whose sum is σ = 4659127200. Its totient is φ = 1995805440.

The previous prime is 3243966521. The next prime is 3243966553. The reversal of 3243966531 is 1356693423.

It is a happy number.

It is not a de Polignac number, because 3243966531 - 2¹⁰ = 3243965507 is a prime.

It is a super-2 number, since 2×3243966531² = 21046637708496347922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3243966521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221001 + ... + 235221.

It is an arithmetic number, because the mean of its divisors is an integer number (291195450).

Almost surely, 2^3243966531 is an apocalyptic number.

3243966531 is a deficient number, since it is larger than the sum of its proper divisors (1415160669).

3243966531 is a wasteful number, since it uses less digits than its factorization.

3243966531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20086.

The product of its digits is 349920, while the sum is 42.

The square root of 3243966531 is about 56955.8296489481. The cubic root of 3243966531 is about 1480.3308444379.

The spelling of 3243966531 in words is "three billion, two hundred forty-three million, nine hundred sixty-six thousand, five hundred thirty-one".