3221540243 has 8 divisors (see below), whose sum is σ = 3381826560. Its totient is φ = 3064776840.

The previous prime is 3221540233. The next prime is 3221540251. The reversal of 3221540243 is 3420451223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3221540243 - 2⁴ = 3221540227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221540233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878855 + ... + 882512.

It is an arithmetic number, because the mean of its divisors is an integer number (422728320).

Almost surely, 2^3221540243 is an apocalyptic number.

3221540243 is a deficient number, since it is larger than the sum of its proper divisors (160286317).

3221540243 is a wasteful number, since it uses less digits than its factorization.

3221540243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761457.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 3221540243 is about 56758.6138220447. The cubic root of 3221540243 is about 1476.9116637038.

Adding to 3221540243 its reverse (3420451223), we get a palindrome (6641991466).

The spelling of 3221540243 in words is "three billion, two hundred twenty-one million, five hundred forty thousand, two hundred forty-three".