3220040251 has 4 divisors (see below), whose sum is σ = 3294924952. Its totient is φ = 3145155552.

The previous prime is 3220040249. The next prime is 3220040269. The reversal of 3220040251 is 1520400223.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3220040251 - 2¹ = 3220040249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3220040651) 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 3 ways as a sum of consecutive naturals, for example, 37442286 + ... + 37442371.

It is an arithmetic number, because the mean of its divisors is an integer number (823731238).

Almost surely, 2^3220040251 is an apocalyptic number.

3220040251 is a deficient number, since it is larger than the sum of its proper divisors (74884701).

3220040251 is an equidigital number, since it uses as much as digits as its factorization.

3220040251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74884700.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 3220040251 is about 56745.3985006714. The cubic root of 3220040251 is about 1476.6824048778.

Adding to 3220040251 its reverse (1520400223), we get a palindrome (4740440474).

The spelling of 3220040251 in words is "three billion, two hundred twenty million, forty thousand, two hundred fifty-one".